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Originally posted by Itisnowagain
reply to post by Serdgiam
Can you breathe up there?
Originally posted by Itisnowagain
reply to post by Serdgiam
Because the cardiac muscle is myogenic, meaning it has the property of being able to contract rhythmically independent of any nerve supply. So the autonomic nervous system modifies the speed of the heart beat but the heart can actually be removed from an animal and continue beating. Isotonic solution/saline is basically sodium chloride that is isotonic to body fluids, and is therefore able to maintain living tissue temporarily. It contains the same concentration of ios as blood and the cells of the body.
Source(s):
Cardiac Nurse
Originally posted by Itisnowagain
reply to post by Serdgiam
The answer lies in a special group of cells that have the ability to generate electrical activity on their own. These cells separate charged particles. Then they spontaneously leak certain charged particles into the cells. This produces electrical impuses in the pacemaker cells which spread over the heart, causing it to contract. These cells do this more than once per second to produce a normal heart beat of 72 beats per minute.
The natural pacemaker of the heart is called the sinoatrial node (SA node). It is located in the right atrium. The heart also contains specialized fibers that conduct the electrical impulse from the pacemaker (SA node) to the rest of the heart.
Originally posted by Serdgiam
It should also be noted that the heart does not beat independently! In the situation you pose, its oscillations are based on the electrical signals received from the brain.
Originally posted by Itisnowagain
reply to post by Serdgiam
I have only provided what is online - i originally stated that no one can say what beats the heart and you stated that it was not true and that the brain does it.
Originally posted by Itisnowagain
The heart muscle cells produce their own electric and pulse/beat.
The brain regulates.
Originally posted by Serdgiam
You are really starting to lose me here... Either way, this isnt fair to the OP. If you wish to start a thread about it, I have no doubt it will be interesting.edit on 11-2-2013 by Serdgiam because: took something too far out of context for relevancy
Originally posted by Itisnowagain
reply to post by Serdgiam
The heart muscle cells produce their own electric and pulse/beat.
You seem to be missing this bit.
Originally posted by Itisnowagain
Sorry OP. I was led astray.
Originally posted by Serdgiam
Originally posted by Itisnowagain
reply to post by Serdgiam
The heart muscle cells produce their own electric and pulse/beat.
You seem to be missing this bit.
Not at all, in fact, I have brought that up repeatedly and even went into more depth on that very specific point in one of my latest posts. You just arent quite understanding what I am saying. I edited the post while you were editing yours too, fun stuff.
Start a thread! Ill reply in that, but not again here (unless its on topic).
Originally posted by Itisnowagain
Where did you say the heart cells themselves produce their own charge and in turn causes the beat?
Originally posted by Angle
reply to post by Serdgiam
It seems we define our own self and label it enlightened. This is also true. Like what is one about?
I have a nice thought on it, do people meditate to stimulate becoming enlightened, if not, can one become enlightened just because of aging, I mean, without intentialy 'going for it' and without knowing what enlightenment is. What if you don't know what it is and if it could ever happen to you. How/why? What would one say it is?
Where does the term enlightened come from/what does it mean?
WHAT DOES IT MEEEAAAAAAN? ?
enlightened
adjective
Definition of ENLIGHTENED
1
: freed from ignorance and misinformation
2
: based on full comprehension of the problems involved