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Romashka [77]
3 years ago
7

SERIOUSLY I NEED HELP I AM TAKING A QUIZ!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Biology
2 answers:
Setler [38]3 years ago
8 0

c is the correct answer

dem82 [27]3 years ago
3 0

Answer:

cardiac

Explanation:

An electrical stimulus is generated by the sinus node (also called the sinoatrial node, or SA node). This is a small mass of specialized tissue located in the right upper chamber (atria) of the heart. The sinus node generates an electrical stimulus regularly, 60 to 100 times per minute under normal conditions.

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