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Author Question: The sinoatrial (SA) node initiates the cardiac cycle and is sometimes called the heart's ... (Read 47 times)

Anajune7

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on: Jul 18, 2018
The sinoatrial (SA) node initiates the cardiac cycle and is sometimes called the heart's _____________.
 
  A. electrode C. generator
  B. pacemaker D. alligator clamp

Question 2

The heart is contained within a closed cavity called the ________.
 
  A. mediastinum C. chest cavity
  B. pleural space D. thoracic outlet


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leannegxo

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Reply #1 on: Jul 18, 2018
Answer to Question 1

ANS: B

Answer to Question 2

ANS: A


Anajune7

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Reply 2 on: Jul 18, 2018
Great answer, keep it coming :)

ghepp

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Reply 3 on: Yesterday
Wow, this really help

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