I thought that the heart beats by automatic electric impulses from the brain. This is what makes the muscles contract, isn't it?
2006-09-28 11:18:55 · 7 answers · asked by JetAlone 2 in Science & Mathematics ➔ Biology
The heart actually stimulates it's own electrical activity. The impulse is generated by the SA node of the heart to stimulate the myocardium. When the myocardium is stimulated, it contracts, therefore pumping blood throughout the body. The SA node
spreads the impluse throughout the atria, & it travels through internodal tracts, from the SA node to the AV node. The AV node is a critical delay in the conduction system. Without this delay, the atria and ventricles would contract at the same time, and blood wouldn't flow effectively from the atria to the ventricles.
2006-09-28 11:26:01 · answer #1 · answered by Advice1A 2 · 1⤊ 0⤋
Yes, The cells in it are the only cells in the body other than the liver that continue to function for a while after it is severed and not reconnected.
2006-09-28 18:22:24 · answer #2 · answered by x_southernbelle 7 · 0⤊ 0⤋
yes but if the heart gets in ti a rythem it will go bye its self for a short period of time.
2006-09-28 18:27:28 · answer #3 · answered by FFCarlos 2 · 1⤊ 0⤋
Maybe if it's too hyper when it's severed sometimes!
2006-09-28 18:21:56 · answer #4 · answered by oriedo_droidpower 2 · 0⤊ 1⤋
Ask Steve Irvin.
2006-09-28 18:20:05 · answer #5 · answered by fisch_maegg 3 · 0⤊ 5⤋
ABSOLUTELY!
2006-09-28 18:20:30 · answer #6 · answered by ndtaya 6 · 1⤊ 0⤋
Yep... =D
2006-09-28 18:26:37 · answer #7 · answered by Ari 2 · 0⤊ 1⤋