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Leona [35]
3 years ago
5

The first cells to initiate an electrical signal in the heart is the

Biology
1 answer:
Lady_Fox [76]3 years ago
3 0

Answer:

Answer is Sinoatrial node, SA.

Explanation:

The sinoatrial node, SA, is known to be a group of cells which are found at the top of the heart.

The electrical signal that is initiated by the sinoatrial node bring about or stimulates the atria and then the ventricle of the heart.

It should be noted that, the sinoatrial node are regarded as the pacemaker cells.

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Which situation would most likely increase the carrying capacity for humans
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C. A new source of freshwater

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The situation that would most likely increase the carrying capacity for humans in a certain region is the availability of new sources of freshwater.

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