Sexual behavior in a castrated male rat can be restored by infusion of ________ into the ________.
A) dopamine antagonists; medial preoptic area
B) apomorphine; medial amygdala
C) glutamate; pinal cord
D) opiates; spinal cord
E) testosterone; medial preoptic area

Question

Quizplus · Accepted Answer

Castration removes the source of testosterone, which is necessary for male sexual behavior. Infusing testosterone into the medial preoptic area can restore sexual behavior in a castrated male rat. Choice A is incorrect because dopamine antagonists would inhibit sexual behavior. Choice B is incorrect because apomorphine is a dopamine agonist and does not act in the medial amygdala to restore sexual behavior. Choice C is incorrect because glutamate does not play a major role in mediating sexual behavior. Choice D is incorrect because opiates would inhibit sexual behavior rather than restore it.

Sexual Behavior in a Castrated Male Rat Can Be Restored