Question

write the note on structure of human heart ?

Answer 1

The human heart is about the size of our own fist and is mainly divided into four chambers namely two ventricles and two atria. ... The right semilunar valves close and prevent the blood from flowing back into the heart. Then, the oxygenated blood is received by the left atrium from the lungs via the pulmonary veins.

Answer 2

Here is your answer
Heart is just as the shape of a clinched fist .It is a double pump and divided by septa into two halves .It has four Chambers two auricles and ventricles ..It muscles composed of cardiac muscles It is surrounded by a layer of pericardium