2006-12-07 12:36:45 · 6 answers · asked by Jackie B 1 in Science & Mathematics ➔ Biology
The heart is a specialised muscle that contracts regularly and continuously, pumping blood to the body and the lungs. The pumping action is caused by a flow of electricity through the heart that repeats itself in a cycle. Your heart will beat an average of 100,000 times per day. In that time, it pumps more than 4,300 gallons of blood throughout your entire body.
I would say that it's role in the circulatory system is a central one.
2006-12-07 12:42:58 · answer #1 · answered by NamGem 3 · 0⤊ 0⤋
Its a simple 2 cycle, 4 chamber pump. that conducts its own electrical pace, pumps the blood to both the lungs and throughout the body. A baby heart even pumps blood from the placenta to the baby heart and around his body.
2006-12-07 12:54:23 · answer #2 · answered by usamedic420 5 · 0⤊ 0⤋
When you breathe in oxygen, it fills up little sacks in your lungs. Veins send purple blood to your heart (purple means there is no oxygen in it). Your heart takes the oxygen from the sacks and combines it with the purple blood, making it red. it then pumps it to other parts of the body that need it...if ur running, probably ur legs, boxing, ur arms, e.t.c. It does this all in a matter of seconds.
2006-12-07 12:46:06 · answer #3 · answered by Anonymous · 0⤊ 0⤋
To pump oxygen-enriched blood and other nutrients to body organs.
2006-12-07 12:42:39 · answer #4 · answered by rollng_thundr 2 · 0⤊ 0⤋
It is the pump, it keeps the blood moving.
2006-12-07 12:45:20 · answer #5 · answered by starting over 6 · 0⤊ 0⤋
Boom Boom to keep you alive.
2006-12-07 12:39:11 · answer #6 · answered by robert m 7 · 0⤊ 0⤋