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explain the function of the heart with the suitabke diagram

explain the function of the heart with the suitabke diagram

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Grade:10

3 Answers

Aarti Gupta
askIITians Faculty 300 Points
9 years ago
Heart is an pumping organ of our bod which pumps the blood to all parts of body..Human heart consist of 4-chambers-two auricles and two ventricles.These are
1.Left auricle,left ventricle and
2.Right auricle,right venticle.
Right part of heart has deoxygenated blood and left part has oxygenated blood so there is complete separation of oxygenated and deoxygenated blood in human’s body.There is auriculoventricular septum between each right as well left auricle and ventricle.Right auricle is separated by right ventricle by tricuspid valve,while left auricle is separated by left ventricle by bicuspid valve or also known as mitral valve.
Arteries and veins are the blood vessels of blood circulatory system.Arteries always carry oxygenated blood except pulmonary artery which carry deoxygenated blood.Veins carry deoxygenated blood except pulmonary vein carrying deoxygenated blood.
Two mein veins namely superior and inferior vena cava bring deoxygenated blood to right auricle of heart from upper and lower part of body respectively.This blood is then passes to right ventricle from right auricle on its contarction and tricuspid valve gets closed at once so as to prevent back flow of blood from ventricle to auricle producing first heart sound called lubb.From there the deoxygenated blood is then passes to pulmonary artery as right venticle opens in pulmonary artery.As the blood enters in this artery the valves present there gets closed producing second heart sound dup and prevent back flow of blood.This pulmonary artery carry the blood to lungs for oxygenation.From lungs after oxygenation ,oxygenated blood is carried to left auricle by pulmonary vein.Left auricle contracts and send the oxygenated blood to left ventricle, bicuspid valve present there gets closed at once.From left ventricle is then sent to aorta as left ventricle open in aorta which send the oxygenated blood to all parts of body.In this way pumping action of heart pumps the blood to all the parts.










213-436_heart 12.jpg
Raheema Javed
156 Points
9 years ago
How the heart functions electrically:
The heart's natural pacemaker - the SA node - sends out regular electrical impulses from the top chamber (the atrium) causing it to contract and pump blood into the bottom chamber (the ventricle). The electrical impulse is then conducted to the ventricles through a form of 'junction box' called the AV node. The impulse spreads into the ventricles, causing the muscle to contract and to pump out the blood. The blood from the right ventricle goes to the lungs, and the blood from the left ventricle goes to the body.258-1857_heart.jpg

Blood Flow:

The heart functions as a pump and acts as a double pump in the cardiovascular system to provide a continuous circulation of blood throughout the body. This circulation includes the systemic circulation and the pulmonary circulation. Both circuits transport blood but they can also be seen in terms of the gases they carry. The pulmonary circulation collects oxygen from the lungs and delivers carbon dioxide for exhalation.The systemic circuit transports oxygen to the body and returns relatively deoxygenated blood and carbon dioxide to the pulmonary circuit.

Blood flows through the heart in one direction, from the atria to the ventricles, and out through the pulmonary artery into the pulmonary circulation, and the aorta into the systemic circulation. The pulmonary artery (also trunk) branches into the left and right pulmonary arteries to supply each lung. Blood is prevented from flowing backwards (regurgitation) by the tricuspid, bicuspid, aortic, and pulmonary valves.The function of the right heart, is to collect de-oxygenated blood, in the right atrium, from the body (via the superior and inferior venae cavae and pump it, through the tricuspid valve, via the right ventricle, through the semilunar pulmonary valve and into the pulmonary artery in the pulmonary circulation where carbon dioxide can be exchanged for oxygen in the lungs.This happens through the passive process of diffusion. In the left heart oxygenated blood is returned to the left atrium via the pulmonary vein. It is then pumped into the left ventricle through the bicuspid valve and into the aorta for systemic circulation.258-1395_330px-Heart_diagram_blood_flow_en.svg.png
P.S- Pic is nice but you are not supposed to upload this with the question.
Rishi Sharma
askIITians Faculty 646 Points
3 years ago
Dear Student,
Please find below the solution to your problem.

Heart is an pumping organ of our bod which pumps the blood to all parts of body..Human heart consist of 4-chambers-two auricles and two ventricles.These are 1.Left auricle,left ventricle and 2.Right auricle,right venticle. Right part of heart has deoxygenated blood and left part has oxygenated blood so there is complete separation of oxygenated and deoxygenated blood in human’s body.There is auriculoventricular septum between each right as well left auricle and ventricle.Right auricle is separated by right ventricle by tricuspid valve,while left auricle is separated by left ventricle by bicuspid valve or also known as mitral valve. Arteries and veins are the blood vessels of blood circulatory system.Arteries always carry oxygenated blood except pulmonary artery which carry deoxygenated blood.Veins carry deoxygenated blood except pulmonary vein carrying deoxygenated blood. Two mein veins namely superior and inferior vena cava bring deoxygenated blood to right auricle of heart from upper and lower part of body respectively.This blood is then passes to right ventricle from right auricle on its contarction and tricuspid valve gets closed at once so as to prevent back flow of blood from ventricle to auricle producing first heart sound called lubb.From there the deoxygenated blood is then passes to pulmonary artery as right venticle opens in pulmonary artery.As the blood enters in this artery the valves present there gets closed producing second heart sound dup and prevent back flow of blood.This pulmonary artery carry the blood to lungs for oxygenation.From lungs after oxygenation ,oxygenated blood is carried to left auricle by pulmonary vein.Left auricle contracts and send the oxygenated blood to left ventricle, bicuspid valve present there gets closed at once.From left ventricle is then sent to aorta as left ventricle open in aorta which send the oxygenated blood to all parts of body.In this way pumping action of heart pumps the blood to all the parts.
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