CMA : Structure and Function of Organs and Organ Systems

Study concepts, example questions & explanations for CMA

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Example Questions

Example Question #2 : Anatomy, Physiology, And Pathophysiology

Activation of the sympathetic nervous system will cause which of the following to occur?

Possible Answers:

Increase in intraocular pressure

Constriction of the pupil

A rounding of the lens

Dilation of the pupil

A flattening of the lens

Correct answer:

Dilation of the pupil

Explanation:

Activation of the sympathetic nervous system will cause dilation of the pupil. Activation of the parasympathetic nervous system will cause constriction of the pupil.

Example Question #3 : Anatomy, Physiology, And Pathophysiology

The intrinsic rate of the pacemaker cells in the AV node is:

Possible Answers:

equal to the rate in the SA node

slower than the rate in the SA node

the AV node does not contain pacemaker cells

faster than the rate in the SA node

varies (sometimes faster, sometimes slower than the rate in the SA node)

Correct answer:

slower than the rate in the SA node

Explanation:

The intrinsic rate of depolarization is slower among the pacemaker cells in the AV node compared to the rate in the SA node.

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