Its average weight is about 340 grams in men and 255 grams in women. The left half and the right half of the heart is divided by a wall called septum. Each half, in turn, is divided into an upper chamber called the auricle and a lower chamber called the ventricle. The auricle receives blood from the veins and the ventricle pumps blood into the arteries.
Heartbeats In a normal, healthy adult, the contraction and relaxation mechanism of the ventricles results in a heartbeat of about 70-72/min in males and 78-82/min in females.
Functions The functions of the heart are:
(i) to supply pure blood to all parts of the body; (through arteries)
(ii) to collect impure blood from organs/tissues; (through veins)
(iii) to pump impure blood into the lungs for purification; and
(iv) to collect pure blood from the lungs.