On an average, the heart of an adult beats about 72 times a minute and that of a child beats between 90 and 120 times a minute. Hence, in a day (that is, 1, 440 minutes), on an average, the adult heart beats 103, 680 times and a child's hearts beats between 129, 600 and 172, 800 times.
The average heart is about the size of a fist. It weighs 300 grams. Blood first flows from the body to the right atrium or the right auricle, then to the right ventricle, then to the lungs, then to the left atrium or the left auricle and then to the left ventricle, before finally flowing back to the body.
On an average, we have about 5.6 litres of blood in our body. In the average lifetime, a heart pumps an amount equivalent to approximately one millions barrels of blood. That is approximately equivalent to the entire capacity of three supertankers. The aorta is the largest artery in the human body and is diametrically about the size of a garden hose. On the other hand, the capillaries are the smallest arteries in the human body, and it takes about ten of them to equal the thickness of a single strand of human hair.
The average heart is about the size of a fist. It weighs 300 grams. Blood first flows from the body to the right atrium or the right auricle, then to the right ventricle, then to the lungs, then to the left atrium or the left auricle and then to the left ventricle, before finally flowing back to the body.
On an average, we have about 5.6 litres of blood in our body. In the average lifetime, a heart pumps an amount equivalent to approximately one millions barrels of blood. That is approximately equivalent to the entire capacity of three supertankers. The aorta is the largest artery in the human body and is diametrically about the size of a garden hose. On the other hand, the capillaries are the smallest arteries in the human body, and it takes about ten of them to equal the thickness of a single strand of human hair.
