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Beanieman Beanieman
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7 years ago
Which statement best describes why clinicians use a defibrillator?
A) The applied current repolarizes the cells of the heart, hence resetting the heart for normal rhythm.
B) A defibrillator takes the place of the SA node and must be applied every minute to keep the heart rate normal until it regains its strength and beats on its own.
C) The ventricles of the heart are so large that only a strong current can make them depolarize, which is needed in order for them to contract and get blood to the body.
D) The applied current depolarizes all the muscle cells at the same time, returning synchronous electrical activity to the heart.
E) The applied current opens up voltage gated calcium channels in the atria causing the heart to begin a new P wave.
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Principles of Human Physiology

Principles of Human Physiology


Edition: 5th
Author:
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ch1990ch1990
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7 years ago
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Beanieman Author
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7 years ago
Honestly anatomy has been the toughest course, thanks for taking a load off my back
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7 years ago
my pleasure Wink Face
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