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Author Question: Cardiac muscle tissue, or _____, makes up the major portion of the heart. A) myocardium B) ... (Read 66 times)

Mollykgkg

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on: Feb 27, 2019
Cardiac muscle tissue, or _____, makes up the major portion of the heart.
 A) myocardium
  B) pericardium
  C) endocardium
  D) septum

Question 2

The _____ sends out an electrical impulse that begins and regulates the heartbeat.
 A) AV node
  B) SA node
  C) Purkinje fibers
  D) AV bundle


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djpooyouma

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Reply #1 on: Feb 27, 2019
Answer to Question 1

A

Answer to Question 2

B


Mollykgkg

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Reply 2 on: Feb 27, 2019
Wow, this really help

FergA

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Reply 3 on: Yesterday
Excellent

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