The Human Heart Rate

Essay specific features

 

Issue:

Science

 

Written by:

Eldon H

 

Date added:

December 29, 2013

 

Level:

University

 

Grade:

A

 

No of pages / words:

3 / 813

 

Was viewed:

6572 times

 

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Essay content:

With an increase in body movement there is an increase in the cell's energy use and the heart rate must increase to pump enough blood to the cells. Then, as body movement decreases again, so does the heart rate. The heart muscle can be enlarged with regular vigorous exercise. A larger heart is more efficient than a smaller heart as it is stronger and can hold more blood...
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A larger heart is more efficient than a smaller heart as it is stronger and can hold more blood. The heart is a cardiac muscle and contracts by itself, even when removed from the body. The muscles rhythmic beat is sped up or slowed down by the autonomic nerves that are attached to the heart. The heartbeat has two phases...
displayed 300 characters

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