Multiple Choice
Bruno has been given Viagra to treat his impotence. How does it work?
A) By increasing sensitivity to female's pheromones.
B) By increasing release of nitric oxide in the hypothalamus and penis.
C) By decreasing dopamine release in the hypothalamus.
D) By blocking pain receptors in the spinal cord.
Correct Answer:

Verified
Correct Answer:
Verified
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