The Conversion of the Corpus Luteum to the Corpus Albicans

question 13

Multiple Choice

The conversion of the corpus luteum to the corpus albicans

• A)is characteristic of the nonpregnant state.
• B)is due to the secretion of hCG.
• C)prevents ovulation in the next menstrual cycle.
• D)occurs only in twinning.

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Definitions:

Depolarization

The process in which a cell's membrane potential becomes less negative, moving towards zero, which is critical in the initiation of action potentials.

Threshold Stimulus

Stimulus resulting in a local potential just large enough to reach threshold and produce an action potential.

All-Or-None Contraction

A principle stating that a nerve or muscle fiber responds completely or not at all to a stimulus once the stimulus reaches a threshold value.

Muscle Fiber

A single, elongated muscle cell that can contract in response to stimulation.