Answer:
I'm pretty sure the answer is true
Numerous people.... Diabetics who are experiencing nerve degeneration of the extremities (something called Diabetic Neuropathy). Another group would be the elderly, who do loose sensation as age progresses. And lastly those with some sort of paralysis or peripheral nerve damage.
<span>The electrical stimulus in the heart begins in the APEX OF THE ATRIA at the SINOATRIAL NODE. The heart has its own electrical conduction system that enables it to work as a unit and supply oxygenated blood throughout the body. This system needs to work in a sequential manner so that the delivery of unoxygenated blood to the lungs will not backflow to other parts of the heart and the body. </span>
The answer is c because I said so, and yeah i need 20 characters so here ya go.... ITS C