Question

STRUCTURE AND FUNCTION OF HEART

Answer 1

Dear student,

Structure of heart:

The heart is located in thorasic cavity in between the lungs.

It is covered by a narrow fluid filled membranous sac called pericardium fluid which prevents heart from shocks.

The heart has four chambers- Two upper chambers are thin walled called atrium(atria) and two lower chambers are thick walled called ventricles.

The right and left side if the heart is separated by a partition called septum.

The right atrium opens into right ventricle through an opening guarded by tricuspid valve.

The left atrium opens into left ventricle through bicuspid valve.

Hope it helps..

Answer 2

Hi mate

Question

STRUCTURE AND FUNCTION OF HEART

Answer

• 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 tricuspid 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 bicuspid valve.

• The left ventricle is now containing the oxygenated blood which is pumped through the aorta and reaches all the organs through arteries.

I Hope This Would Help You..

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