A nurse teaching a sex education class is asked by a male student, "What exactly happens when my body gets aroused?" The nurse bases a reply on which statement?
1. The vas deferens thickens and expands.
2. The sympathetic nerves of the penis are stimulated.
3. The corpora of the penis become engorged.
4. The prepuce of the penis elongates.
3
Rationale 1: The vas deferens is the internal structure through which the semen passes. Its shape is not affected by sexual arousal.
Rationale 2: The parasympathetic nerves, not the sympathetic nerves, of the penis are stimulated.
Rationale 3: When arousal occurs, the penile blood vessels become engorged, and an erection occurs.
Rationale 4: The prepuce, or foreskin, does not increase in length during arousal.
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