The human heart
- Thread starter John99
- Start date
from my limited understanding, the a-v node provides the chemicals necessary for the beating. The brain can alter the intensity (ie: beating faster when you're running, or scared) -- but is not necessary for basal function.
The heart does need, however, oxygen to drive metabolism in the cells to generate ATP (necessary to beat). It gets this from the lungs and then through the coronary artery. It also needs glucose for energy, which it would get, indirectly, from the digestive system. I'm sure there are some other chemicals too.
The heart does need, however, oxygen to drive metabolism in the cells to generate ATP (necessary to beat). It gets this from the lungs and then through the coronary artery. It also needs glucose for energy, which it would get, indirectly, from the digestive system. I'm sure there are some other chemicals too.
Apart from heart attack, electric shocks also can stop heart.
Other way, the stopped heart may be resuscitated by electric shock administered by cardiologists. Pacemakers are also used to stimulate heart electrically. An artificial heart too is a viable alternative.
Other way, the stopped heart may be resuscitated by electric shock administered by cardiologists. Pacemakers are also used to stimulate heart electrically. An artificial heart too is a viable alternative.
Thanks.
oxygenated blood supply (or substitute), the SA node and AV node supposedly rely on nervous system but what if conditions are consistent and optimal?
Minus the presence of sensory stimuli would this render the nervous system obsolete\unessential or does a nervous system need to be present for basic firing rhythms?
We can eliminate the brain and lungs as necessary (provided an alternative is present to supply oxygen), what about the nervous system? of course the nervous system would be far too complex to replicate.
oxygenated blood supply (or substitute), the SA node and AV node supposedly rely on nervous system but what if conditions are consistent and optimal?
Minus the presence of sensory stimuli would this render the nervous system obsolete\unessential or does a nervous system need to be present for basic firing rhythms?
We can eliminate the brain and lungs as necessary (provided an alternative is present to supply oxygen), what about the nervous system? of course the nervous system would be far too complex to replicate.
i dont think the SA and AV nodes directly rely on the nervous system for electric impulses, thats why its a myogenic heart. but for guidance i suppose the nervous system would help. you can keep a heart alive and beating in solution, which goes to say it doesnt need the nervous system to function in a basicstate. :m:
Yes, i wasnt sure about that. Functioning in a basic state is in fact what my question is based on.
ah, well if you just wanted it to sit there and beat for a while, id say you really dont need a nervous system. but what do i know? :m:
no not for awhile, more like 60-70 years under optimal conditions.
wth are you trying to do? :m:
i heard the brain can survive forever if left in the open. :m:
