The ____ send(s) out electrical impulses to initiate depolarization. 

A. bundle branches
B. AV node
C. Purkinje fibers
D. SA node
E. bundle of His


D. SA node
Depolarization begins when an electrical impulse flows from the SA node to the ventricles.

Health Professions

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The organ that serves as a lifeline for the developing fetus is the __________________

Fill in the blank(s) with correct word

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The Joint Commission requires that the medical record contain a summary list for each patient that should include all of the following EXCEPT ____________________

A) significant medical diagnoses and conditions B) ?significant operative and invasive procedures C) adverse and allergic drug reactions D) ?past insurance and billing accounts with significant balances

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The ____________________ muscle depresses the tongue tip

Fill in the blank(s) with correct word

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Money paid by a practice or a provider for office rent, office utilities, and employee salaries are considered ____________________

Fill in the blank(s) with correct word

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