CMA : Structure and Function of Organs and Organ Systems

Study concepts, example questions & explanations for CMA

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Example Questions

Example Question #1 : Structure And Function Of Organs And Organ Systems

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

Possible Answers:

A rounding of the lens

A flattening of the lens

Increase in intraocular pressure

Constriction of the pupil

Dilation of the pupil

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 #2 : Structure And Function Of Organs And Organ Systems

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

Possible Answers:

the AV node does not contain pacemaker cells

slower than the rate in the SA node

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

faster than the rate in the SA node

equal to 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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