The P wave of an electrocardiogram represents:

a. ventricular depolarization.
b. atrial depolarization.
c. atrial repolarization.
d. ventricular repolarization.


Answer: b. atrial depolarization.

Anatomy & Physiology

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A blood test reveals a large increase in the number of RBCs. One possible explanation for this may be ________

A) anemia B) leukemia C) polycythemia D) leukocytosis

Anatomy & Physiology

The ___ lung is longer than the right lung.

Fill in the blank(s) with the appropriate word(s).

Anatomy & Physiology

The external ear terminates at the ________.

A. oval window B. pinna C. internal auditory meatus D. tympanic membrane E. ossicles

Anatomy & Physiology

As the body progresses from the absorptive to the postabsorptive state, only the ________ continues to burn glucose while every other organ in the body mostly switches to fatty acids.

A) liver B) brain C) pancreas D) spleen

Anatomy & Physiology