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Home Q & A Board Biology-Related Homework Help Anatomy and Physiology
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Beanieman Beanieman
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7 years ago
If both the SA node and the AV node fail, what would be the expected outcome of impulse rate within the heart?
A) The individual would be in heart failure or have a myocardial infarction due to the lack of a beating heart.
B) The vagus nerve takes over and maintains a normal heart rate.
C) The heart is autorhythmic therefore it continually beats even after death because death is defined as a lack of brain waves.
D) The sympathetic nervous system takes over and maintains normal heart rate.
E) The rate would be 30-40 beats per minute due to the concentration of pacemaker cells in the Purkinje fibers.
Textbook 
Principles of Human Physiology

Principles of Human Physiology


Edition: 5th
Author:
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ch1990ch1990
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Beanieman Author
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7 years ago
Really appreciate your kind help
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#3
7 years ago
don’t mention it Wink Face
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