A woman comes to the clinic for a routine visit. While a nurse is interviewing the client and obtaining a sexual history, the client states, "I've always wondered what is happening in my body when I become sexually aroused."
The nurse would incorporate an understanding of which of the following as the control mechanism?
A) Sympathetic nervous system
B) Endocrine system
C) Parasympathetic nervous system
D) Central nervous system
Ans: C
In healthy adults, the sex drive is integrated through the central nervous system, with the autonomic nervous system governing extragenital changes (increased respiration and heart rate). The parasympathetic nervous system largely controls arousal, and the sympathetic nervous system controls orgasmic discharge. Sexual stimulation brings about a total-body response, with dramatic changes seen in the genitals and breasts. Sex hormones, particularly androgen, influence desire in both genders, but less is known about hormonal influence in women. That the higher centers of the brain apparently mediate the lower reflex response centers supports the relationship between cognitive and affective states and sexual function.
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