explain 4 functions of heart
cbse class10 todays question paper
please answer guys i want to check my answee
Answers
simply saying, heart’s function is to…
take the blood from vena-cava(both superior and inferior)
pump it through the pulmonary artery to the lungs
after the lungs oxygenate the received blood, blood is sent to the heart through the pulmonary vein
the heart then pumps the oxygenated blood for the whole body through the aorta
Now if you want to understand every point in detail, here we go:
Deoxygenated blood is received by the heart from the body through superior and inferior vena cava. The superior vana-cava carries deoxygenated blood from the upper region and inferior vena-cava(which is larger than the superior one) from the lower region of the body.
The blood from both the vena-cava is received by the right atrium. Right atrium also receives blood from coronary sinuses(vessels of the heart itself). This blood (deoxygenated) flows into the right ventrical. The opening between the right aurical and ventrical is guarded by a bicuspid valve called the mitral valve. Now blood from right ventricle is pumped into the lungs(for oxygenation) through the pulmonary artery.
After the blood is oxygenated in the lungs, it is again received by the heart…in the left atrium through the pulmonary vein. Now the blood from left atrium flows into the left ventricle. The opening of the left atrium and ventricle is guarded by the tricuspid valve.
The left ventricle is now containing the oxygenated blood which is pumped through the aorta and reaches all the organs through arteries.
may this will help you