Question

functioning of heart and write the process of circulation taking place in a human heart

Answer 1

Hii..
Heart circulates oxygenated blood to all the parts of the body..
After being oxygenated through lungs the blood comes into left auricle through pulmonary vein..After auricular contraction it travels into the left ventricle and ventricle trancports oxygenated blood to all the parts of the body through Aorta..
The deoxygenated blood is transported to Right auricle through superior and inferior vena cava...After being pumped this deoxygenated blood is circulated to lungs with the help of pulmonary artery..
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hope this helps!

Answer 2

The function of the heart is to pump blood to all parts of the body. The deoxygenated blood from superior and inferior venacava enters the right auricle. The right auricle receives deoxygenated blood and further push it into right ventricle. The tricuspid valve between right auricle and right ventricle prevents the back flow of blood. The blood is then pushed into the pulmonary artery. The pulmonary artery takes the deoxygenated blood to lungs for oxygenation. The oxygenated blood is taken back to the heart with the help of pulmonary vein. The pulmonary vein pours the blood into the left auricle. The blood is then pushed into the left ventricle. The mitral valve or bicuspid valve is present between left auricle and left ventricle. The oxygen rich blood is then transported to all parts of the body by aorta.