Why are valves needed in the heart class 10

What is the function of valves present in the heart

  1. There are four valve present in the heart which helps in regulation of blood flow. Blood flow in a particular direction with right rate. The tricuspid valve allow blood to pumped to the ventricle below. The pulmonary valve: Ventricle contracts and pump blood through pulmonary valve to lungs
  2. Heart. (1) It is a muscular organ, big as our fist, reddish brown in colour, situated between the 2 lungs in middle of thoracic cavity, surrounded by 2 layered sac. (2) It has different chambers to prevent the oxygen rich blood from mixing with blood containing carbon dioxide. (3) Heart is divided by septa into 2 halves i.e. the right and left
  3. Each heart valve has two functions: To open correctly so blood can empty from the chamber To close properly so blood flows forward When the valves and chambers fail to move blood properly, symptoms eventually may develop and require critically important treatment
  4. Aside from preventing back flow of blood, valves in the veins aid in the return of blood from the extremities to the heart (from feet and legs in particular)
  5. Answer: Valves present in the heart does not allow the blood to flow backwards when the atria or ventricles contracts. Valves are present in the veins to prevent the back flow of blood in the veins as it travels at very slow rate in the veins. Extra Questions for Class 10 Science Chapter 6 Short Answer Type

Valves are flaps of fibrous tissues located in the cardiac chambers between the veins. They ensure that the blood flows in a single direction (unidirectional). Flaps also prevent the blood from flowing backwards. Based on their function, valves are of two types Veins need valves to keep blood flowing in one direction because the flow is less constant; the flow in arteries is constant and requires artery walls to be more flexible and strong enough to accommodate the high pressures Assess the function of heart valves. Follow heart valve disease. Look for blood clots inside the heart. 3. Electrocardiogram (ECG or EKG): Measures the electrical activity of the heartbeat to provide two kinds of information. First, by measuring time intervals on the ECG, a doctor can determine how long the electrical wave takes to pass through. Once my second opinion confirmed that I would need heart valve replacement surgery, I began to evaluate the options for my bicuspid aortic valve that suffered from stenosis and regurgitation.. I quickly learned that I had two choices -- a biological heart valve replacement or a mechanical heart valve replacement.Biological heart valve replacements are made from animal tissue (pigs, cows or.

Heart Class 10, Life processe

Science Class 10 Biology (India) Life right ventricle down here this is the second chamber of the heart and it gets there by passing through a valve and this valve and all valves in the heart are basically there to keep blood moving in the right direction so it doesn't go in the backwards direction so this valve is called the tricuspid. A normal heart and heart valve problems. Heart valve problems may include a narrowed valve (stenosis), a leaking valve (regurgitation) or a valve with leaflets that are bulging back (prolapse), as shown in the bottom two images. Normal heart valves and blood flow are shown in the top image

Valves in veins are bicuspid, meaning they have two flap-like structures that regulate blood flow. These flaps are made of elastic tissue. The valves' main job is to keep the blood moving in one direction - back up towards the heart. When the valve is open, blood freely flows upward towards the heart and when the valves are closed, blood. Structural heart disease is a problem with the tissues or valves of the heart. Many, structural heart diseases are congenital [con-JEN-it-al], which means present at birth. Some structural heart disease will develop later in life. There are many kinds of structural heart diseases, but they all involve a defect or disorder in the structure of.

The four valves present in the heart keep blood moving in one direction and help in preventing the backflow of blood into the heart. The two valves are found in the heart itself and the other two valves are found in the major arteries in the heart. The major arteries of the heart are Aorta and Pulmonary Artery ### Learning objectives Specialist outpatient clinics were first established by cardiologists with a broader involvement in valve disease including inpatient opinions and care (figure 1).1 2 This article will concentrate on the core outpatient clinic. Figure 1 Roles of a specialist valve clinic. This includes the clinical and organisational aims of the valve clinic itself and the broader aims.

Heart Valves and Circulation American Heart Associatio

Why are valves present in veins but not in arteries

Well, your blood relies on four special valves inside the heart. A valve lets something in and keeps it there by closing — think of walking through a door. The door shuts behind you and keeps you from going backward. Two of the heart valves are the mitral (say: MY-trul) valve and the tricuspid (say: try-KUS-pid) valve. They let blood flow. The heart valves work the same way as one-way valves in the plumbing of your home. They prevent blood from flowing in the wrong direction. Each valve has a set of flaps, called leaflets or cusps In this case, instead of hearing normal heart sounds attributed to the flow of blood and closing of heart valves, unusual heart sounds may be detected. This is often followed by medical imaging to confirm or rule out a diagnosis. In many cases, treatment may not be needed. Some common congenital heart defects are illustrated in Figure 9 Heart valves can have both malfunctions at the same time (regurgitation and stenosis). Also, more than one heart valve can be affected at the same time. When heart valves fail to open and close properly, the implications for the heart can be serious, possibly hampering the heart's ability to pump blood adequately through the body

The heart has four valves - one for each chamber of the heart. The valves keep blood moving through the heart in the right direction. The mitral valve and tricuspid valve are located between the atria (upper heart chambers) and the ventricles (lower heart chambers).. The aortic valve and pulmonic valve are located between the ventricles and the major blood vessels leaving the heart The heart also has four valves that open and close to let blood flow from the atria to the ventricles and from the ventricles into the two large arteries connected to the heart in only one direction when the heart contracts (beats). The four heart valves are: Tricuspid valve, located between the right atrium and right ventricl A normal heart has two upper and two lower chambers. The upper chambers, the right and left atria, receive incoming blood. The lower chambers, the more muscular right and left ventricles, pump blood out of your heart. The heart valves, which keep blood flowing in the right direction, are gates at the chamber openings. Free E-newsletter (c) Why are valves present in heart and viens ? (CCE 2011) Answer: (a) Fish has single circulation, that is, blood passes once through the heart in one cycle. It goes from heart to gills, from gills to body and back to heart. (b) Haemoglobin. It occurs inside red blood corpuscles. (c) Valves occur in heart and veins to prevent back flow of blood Disease of the heart valves remains an important cause of morbidity and mortality across the world. While advances in echocardiography and the widespread availability of antibiotics have changed the prevalence, management, and especially the diagnosis of valve disease for specialists, very little has changed for generalists, who hear heart murmurs less frequently

The current American Heart Association and American College of Cardiology (AHA/ACC) guidelines recommend that biologic valves are reasonable in patients aged 70 or above (Class IIa recommendation), whereas a mechanical valve is reasonable for patients below 60 years of age (Class IIa recommendation) 1.While the guidelines make clear that patient choice and willingness to take anticoagulation. The chances of survival in an untreated heart valve disease are poor. Aortic stenosis (AS): Patients with severe AS develop symptoms in 3 to 5 years. Around 75% of patients with unoperated aortic stenosis may die 3 years after the onset of symptoms. The long-term survival following surgical valve replacement in patients over 65 years of age is. Mitral valve regurgitation (MR), a condition in which the mitral valve does not close properly, allowing blood to leak back into the heart's upper chamber, is the most common disease of the heart valves. It can cause symptoms such as cough, fatigue, and trouble breathing. The risk of MR increases with age

Students study how heart valves work and investigate how valves that become faulty over time can be replaced with advancements in engineering and technology. Learning about the flow of blood through the heart, students are able to fully understand how and why the heart is such a powerful organ in our bodies. Students then use their understanding to design and create a model heart valve using. This is a weakening and bulging of a part of the heart muscle or the aorta (the large artery that carries oxygenated blood out of the heart to the rest of the body). Heart valve disease. Malfunction of one or more of the heart valves that may block blood flow within the heart or result in blood leaking backwards (regurgitation). Cardiac tumor When Dr. Eisenberg found out he needed mitral valve repair, he said you go to the place where you'll have the best result. He chose to have Dr. Adams perform his operation. The decision to refer or accept a patient for mitral valve surgery is substantially different than for most other cardiac surgical operations A summary• The heart is located in the thoracic cavity• The heart has: 3 layers, 4 chambers, 4 valves• The heart pumps oxygen and nutrient rich blood to the organs, tissues and cells of the body, and eliminates waste products• The Cardiovascular System: Pulmonary circulation, Systemic circulation, Coronary circulation• Cardiac.

A leaky heart valve is a medical condition that can vary in severity depending on how much it disrupts normal blood flow. The heart contains four valves - the tricuspid, the pulmonic, the mitral. Adam Pick is a heart valve patient and author of The Patient's Guide To Heart Valve Surgery. In 2006, Adam founded HeartValveSurgery.com to educate and empower patients. This award-winning website has helped over 10 million people fight heart valve disease. Adam has been featured by the American Heart Association and Medical News Today Heart Valve Disease . When heart valves become damaged or diseased, they don't function properly. If valves don't open and close properly, blood flow becomes disrupted and body cells don't get the nutrient supply they need. The two most common types of valve dysfunction are valve regurgitation and valve stenosis

Tissue valves, which are made from pig heart valves or cow heart-sac tissue, typically last about 15 years. But they usually don't require the lifelong use of anti-clotting drugs. Older people are more vulnerable to the bleeding side effects of warfarin. They're also less likely to outlive their new valves Heart valve surgery is open-heart surgery through the breastbone, into the chest. It is a major operation that can last two hours or longer and recovery often takes several weeks. There are newer, less invasive procedures suitable for some types of valvular heart disease, but they are only done at certain hospitals After blood has gone through the valve, the leaflets swing closed to keep the blood from flowing back into the heart. Aortic stenosis happens when the opening in the aortic valve is narrowed. Valves affected by stenosis limit blood flow. Your heart has to work harder to squeeze blood through the narrow valve than it does when the valve opening. What two values are needed in order to calculate cardiac output (CO) for a ventricle. What is the function of the valves in the heart. left hip. The apex of the heart is situated toward the. aorta. What vessel delivers oxygenated blood to systemic capillaries for gas exchange

Severe heart valve problems, such as leaky heart valve makes labor or pregnancy and delivery of the baby risky. In case a woman has severe form of heart valve problem, she should consider repair or replacement of heart valves before pregnancy or planning for a baby. If needed, doctors may perform either of heart valve surgery during the pregnancy Many patients can be treated with medications and a heart-healthy lifestyle, and a procedure such as a stent or bypass is only needed for them when there are disabling and/or progressive symptoms, or the blockage is in a dangerous location. The blockage is likely in your right coronary artery and treatment should depend on your symptoms and the. Hence, the thick walls are a structural necessity. The valves that are generally found in the veins are generally to prevent the backflow of the blood. This is not the case for the arteries as the blood does not go back into the heart as the heart is pumping blood out into the arteries. So, the arteries do not have valves The heart is a pump, usually beating about 60 to 100 times per minute. With each heartbeat, the heart sends blood throughout our bodies, carrying oxygen to every cell. After delivering the oxygen, the blood returns to the heart. The heart then sends the blood to the lungs to pick up more oxygen. This cycle repeats over and over again

Video: Life Processes Class 10 Extra Questions with Answers

Life Processes Class 10 Important Questions Long Answer Type. Question 1. Draw the diagram of sectional view of human heart and on it name and label the following parts: (a) The chamber of the heart that pumps out deoxygenated blood. (b) The blood vessel that carries away oxygenated blood from the heart Heart and Circulatory System. With each heartbeat, blood is sent throughout our bodies, carrying oxygen and nutrients to every cell. Every day, the approximately 10 pints (5 liters) of blood in your body travel many times through about 60,000 miles (96,560 kilometers) of blood vessels that branch and cross, linking the cells of our organs and body parts Figure out the heart rate. By counting how many S1 sounds you hear in 10 seconds and then multiplying by 6, you will find out what the patient's heart rate is. If his resting heart rate is below 60 bpm or above 100 bpm, an electrocardiogram should also be taken and additional medication may follow Heart disease refers to conditions that involve the heart, its vessels, muscles, valves, or internal electric pathways responsible for muscular contraction. Common heart disease conditions include: Coronary artery disease is the main cause of heart attacks. It is the most common kind of heart disease in the U.S

Human Heart - Anatomy, Functions and Facts about Hear

The valves open or close each time the heart beats. This ensures the body always has a sufficient blood supply, and the blood is moving as it should. The four heart valves are: the mitral valve. Atrial flutter is an abnormality in the beating of the heart. WebMD provides a comprehensive look at the causes, symptoms, diagnosis, and treatment of atrial flutter and atrial fibrillation A leaky mitral valve can cause the heart to work harder to get enough blood to the rest of the body; a leaky mitral valve might have to be surgically repaired. A child or adult with an AVSD will need regular follow-up visits with a cardiologist (a heart doctor) to monitor his or her progress, avoid complications, and check for other health.

Why Do Veins Have Valves and Arteries Do Not

Heart valve disease. Your heart has four valves that work in unison to make sure that blood is pumped in the proper direction. Heart valve disease can occur when one or more of your four heart valves does not work correctly. The causes of heart valve disease include stenosis, or the thickening or fusing of the valve flaps, preventing the valve. I really like this picture that I found it actually shows you really neatly where the heart sits in our body so you can see the heart is surrounded on both sides by ribs right and in fact I didn't draw it in yet but let me show you where the lungs would be so this is where the lungs this is the the right lung and on this side you'd have the left lung so this is where your heart sits between.

For children and adults with congenital heart defects, the Melody heart valve implant may minimize the need for future surgery. While it's still not clear if long-term outcomes will be as good as. However, we don't have data to verify that. After the valve wears out, a patient will need to have a new valve placed or have another valve implanted during open heart surgery. A 65-year-old patient likely will be expected to live longer than 10 to 15 years after surgery, so durability of tissue valves must be validated When these valves develop problems, either from age-related changes or infections, they may start to leak. A leaky mitral valve is a common cause of a heart murmur, for instance. Structural problems in the heart include leaking valves, thickening or narrowing of valves or blood vessels or thickening of the heart muscle itself

PVL present at the end of a classic aortic or mitral valve replacement is an unpleasant and infrequently discussed complication. The incidences of PVL amount up to 10% in the aortic position and up to 17% in the mitral position during follow‐up. 5- The mitral valve is one of four valves in the heart that keep blood flowing in the right direction. It is located between the heart's left atrium and left ventricle. The lub-dub sound that we associate with a healthy heart is the sound of heart valves closing; it should be all that a veterinarian hears when listening to a dog's heart. Recent research finds that a commonly used class of antibiotics can cause a potentially serious heart valve condition. These drugs, called fluoroquinolones, have also been found to cause other. Valve movement after deployment, blockage or disruption of blood flow through the heart, need for additional heart surgery and possible removal of the Edwards SAPIEN 3 Ultra and SAPIEN 3 valves, a blood clot that requires treatment, damage to the valve (e.g., wear, breakage, recurring aortic stenosis), nonstructural valve dysfunction (e.g. Single-chamber pacemakers, the most commonly used devices, deliver electrical impulses to the right atrium (upper chamber) of the heart.(The sinus node, a cluster of cells in the right atrium, is the heart's natural pacemaker.); Dual-chamber pacemakers are used when the timing of the chamber contractions is misaligned.The device corrects this by delivering synchronized pulses to the right.

Aortic stenosis is the obstruction of blood flow across the aortic valve (see the image below). Among symptomatic patients with medically treated moderate-to-severe aortic stenosis, mortality from the onset of symptoms is approximately 25% at 1 year and 50% at 2 years The left heart pump consists of the left atrium, mitral valve, left ventricle, aortic valve, and aorta. Its job is to pump oxygen-rich blood out to the body's tissues. Blood returning to the heart from the lungs enters the left atrium. When the atria contract, the mitral valve opens and allows the blood to enter the left ventricle Patients with a biological valve may need to have the valve replaced in 10 to 15 years. Mechanical valves may also fail, so patients should alert their doctor if they are having any symptoms of valve failure. Patients with a mechanical valve will need to take a blood-thinning medicine for the rest of their lives

The aortic valve (1) is one of four valves in the normal heart. It sits between the left ventricle (2) and the aorta (3). Heart valves are thin flaps of tissue anchored in a fibrous ring. The normal aortic valve has 3 leaflets (4) that open to allow blood to move forward and close to prevent backward blood flow details, we cannot comment on why you were previously issued without getting a special issuance. However, FESSA is clear that you will need to undergo a one-time process for obtaining a special issuance for your heart valve replacement. We would encourage you to discuss the situation with your AME so he or she can direct your application to th In some individuals, valves (V) can be visualized through the skin. B: apply pressure to a segment of vein with the index finger and swipe the blood toward the heart with the thumb. C: remove the thumb. The valve prevents backflow of blood, and the vein segment distal to the valve remains collapsed The heart's muscle is constantly active, so it needs its own blood supply, through the coronary artery, to provide it with oxygen and glucose. Working of the valves ; Valves in the heart prevent blood from being pushed backwards up into the atria when the heart 'beats'. Animation: Heart Contraction and Blood Flow How the heart pumps bloo Both heart valve replacement and permanent heart pacemaker insertion are specifically disqualifying medical conditions. This means that if you hold any class of medical certificate you should self-ground (FAR 61.53) until you obtain a special issuance (waiver); if you see your aviation medical examiner (AME), he or she cannot issue you a medical until you are cleared by the FAA's.

Typically, biological valves last between 10 and 15 years, so you may require another replacement surgery at some point. They don't come with a higher risk of blood clots, so you most likely won. Heart failure (HF) affects more than 6.5 million people in the United States and has a 50% mortality rate within five years of diagnosis. 1 The lifetime risk of HF at 45 years of age is 30% for white men and 32% for white women. 2 HF is a progressive disease that can result from any structural or functional changes of the heart, leading to the. Once your heart is beating again, the doctor will observe the heart to assess the function of the heart and the valves. Temporary wires for pacing may be inserted into the heart. These wires can be attached to a pacemaker and your heart can be paced, if needed, during the initial recovery period Pathway of Blood Through the Heart. In this educational lesson, we learn about the blood flow order through the human heart in 14 easy steps, from the superior and inferior vena cava to the atria and ventricles. Come also learn with us the heart's anatomy, including where deoxygenated and oxygenated blood flow, in the superior vena cava, inferior vena cava, atrium, ventricle, aorta. Structure of the Heart. The human heart is a four-chambered muscular organ, shaped and sized roughly like a man's closed fist with two-thirds of the mass to the left of midline.. The heart is enclosed in a pericardial sac that is lined with the parietal layers of a serous membrane.The visceral layer of the serous membrane forms the epicardium.. Layers of the Heart Wal

10 Heart Tests Your Doctor Might Order, and What They Mea

A new study suggests the answer depends on the age of the patient and which of the heart's valves needs to be replaced. About 2.5 percent of the U.S. population may need valve replacement. Heart valve disorders can affect any of the valves in your heart. Your heart valves have flaps that open and close with each heartbeat, allowing blood to flow through the heart's upper and lower.

Biological Heart Valve Replacements - Pig, Cow or Human

The valves open and close in response to pressure changes in the heart. Atrioventricular valves are located between the atria and ventricles. Semilunar valves lie between the ventricles and the major arteries into which they pump blood. People with a heart murmur have a defective heart valve that allows the backflow of blood the valve is leaky (aortic regurgitation) - the valve allows blood to flow back through into the heart ; The problems can get worse over time and in severe cases can lead to life-threatening problems such as heart failure if left untreated. There are no medicines to treat aortic valve problems, so replacing the valve will be recommended if. Leaking or narrowing of valves can present problems for your heart. Find out what your surgeon will consider when deciding whether a heart valve repair or replacement is best for you

What You Need to Know About Vein Valves - Vein Clinics of

Heart Ventricle Contraction. LAVAs were defined as sharp high-frequency ventricular potentials distinct from the far-field ventricular electrograms that may display fractionation or have multiple components and are indicative of local electrical activity arising from pathologic tissue. From: Trends in Cardiovascular Medicine, 2014 The four chambers are connected by four valves — the tricuspid, pulmonic, mitral and aortic valves. These valves work like one-way doors, allowing blood to flow in only one direction. Blood Circulation. As the heart beats, it pumps blood through a system of blood vessels called the circulatory system The heart is composed of three layers: the epicardium (outer layer) which prevents excess expansion or movement of the heart, the myocardium (middle layer) which initiates contractions driving the cardiac cycle, and the endocardium (inner layer) that lines the cavities and valves. The heart contains two upper chambers called atria and two lower. Heart valve repair or replacement - if the valves are damaged and affect the heart's function, they may be repaired or replaced to help improve symptoms. LVAD (Left ventricular assist device) - this mechanical device helps the heart to pump blood out of the left ventricle (main pumping chamber of the heart) when it is not working properly

Heart Valve Problems Guide: Causes, Symptoms and Treatment

M-mode echo is useful for measuring heart structures, such as the heart's pumping chambers, the size of the heart itself, and the thickness of the heart walls. Doppler echocardiography. The Doppler technique is used to measure and assess the flow of blood through the heart's chambers and valves Annular rupture and need for permanent pacemaker are still a concern, but not to the degree as before. 3 A novel finding in this study is the increased risk of peri-procedural stroke among BAV patients. The TVT registry does not allow for further details of stroke, but it is reasonable to assume an embolic etiology from the calcified valve. The Vertebrate Animal Heart: Unevolvable, whether Primitive or Complex. We conclude that there is a design in the evolution of the venous connections of the heart, pectinate muscles, atrioventricular valves,' left ventricular tendons, outflow tracts, and great arteries. One neglected aspect in the study of evolution is that of anticipation

Describe the function of heart - Biology Questio

Heart valves are just that - biological valves that only allow blood to flow through the heart in one direction, ensuring that all the blood gets to where it needs to be. Here is a list of the most important valves in the heart, and an explanation of why they are important: The Tricuspid Valve. The tricuspid valve is what is called an. Besides these, the heart also contains four valves - tricuspid valve, mitral valve, aortic valve and pulmonary valve. Functions of the Heart. Pumping blood is the chief and only function of the heart! Freshly oxygenated blood from the lungs enter the heart which is then pumped out to the rest of the body. After delivering oxygen to all. Rheumatic heart disease is caused by rheumatic fever, an inflammatory disease that can affect many connective tissues, especially in the heart, joints, skin, or brain. The heart valves can be inflamed and become scarred over time. This can result in narrowing or leaking of the heart valve making it harder for the heart to function normally

Circulation and Heart Valves Boundless Anatomy and

Ventricular septal defect (VSD) is a gap or defect in the septum between the heart's two lower chambers (ventricles). The septum is a wall that separates the heart's left and right side. Septal defects are sometimes called a 'hole' in the heart. It is the most common heart problem that babies are born with Arteries carry blood from the heart to various organs of the body under high pressure so they have thick and elastic walls. Veins collect the blood from different organs and bring it back to the heart. The blood is no longer under pressure so, the walls are thin with valves to ensure that blood flows only in one direction The Heart in Spondylitis. In addition to well-known extra-articular manifestations, ankylosing spondylitis (AS) has been reported to be associated with a number of cardiovascular diseases, including aortitis, aortic valve disease, conduction disturbances, cardiomyopathy, and ischemic heart disease. Cardiac issues are found in an estimated two. Semilunar Valves are the two valves located between the pulmonary artery and the aorta that prevent blood from flowing back into the heart. Both valves consist of three semi lunar cusps. Permit blood flow in one direction from ventricles into the arteries. 3. Aortic Valve found at the base of the aorta and the left ventricle 4

Two research letters published today in JAMA Network Open describe the serious ramifications of deferring transaortic valve replacement (TAVR) for patients with severe, symptomatic aortic stenosis early in the COVID-19 pandemic.. Worsening heart failure, death. In the first study, researchers from Mount Sinai Hospital in New York City analyzed the data of 77 patients whose TAVR, diagnostic. To draw the internal structure of the heart, start by sketching the 2 pulmonary veins to the lower left of the aorta and the bottom of the inferior vena cava slightly to the right of that. Then, fill in the base of the heart with the right and left ventricles and the right and left atriums. Once you have the basic outline of the heart sketched.

Two classes of drugs widely used to treat high blood pressure and heart disease — ACE inhibitors and angiotensin receptor blockers — interact with the ACE2 receptor. A possible concern related to COVID-19 stems from the notion that these blood pressure medications could increase the number of ACE2 receptors expressed on cells, possibly. The human heart is the first functional organ to develop. It begins beating and pumping blood around day 21 or 22, a mere three weeks after fertilization. This emphasizes the critical nature of the heart in distributing blood through the vessels and the vital exchange of nutrients, oxygen, and wastes both to and from the developing baby Q: Were you surprised by the high rate of TAVR valve degeneration in this study? Dr. Kapadia: No, because I do not think the data are accurate. We have been performing TAVR for 10 years, and only three patients out of 1,500 or so have required valve replacement. This is a rare event, and there is no need to be alarmed AEDs analyze heart rhythm and can help rescuers determine whether a shock is needed to restore a normal heartbeat. These devices are not difficult to use, but training in the use of AEDs is highly. There are many types of congenital heart defects. The most common defects involve the inside walls of the heart, the valves of the heart, or the large blood vessels that carry blood to and from the heart. Some defects require no treatment, but some require treatment soon after birth THE HEART PPT 1. The heart is located a little to the left of the middle of your chest, and is about the size of your fist. 2. arteries veins capillaries Carry blood away fron the heart. The aorta is the largest artery. Carry blood back to the heart.(contain valves) The vena cava is the largest vein