Erection
A)involves dilation of the arterioles supplying the sponge-like vascular spaces of the penis
B)results from cGMP production induced by nitric oxide
C)occurs when the seminiferous tubules of the penis become engorged with sperm
D)occurs in response to sympathetic nervous stimulation of the penis
E)has both a and b characteristics

Question

Quizplus · Accepted Answer

Erection involves the dilation of arterioles supplying the sponge-like vascular spaces of the penis, which is mediated by the production of cGMP induced by nitric oxide. Therefore, both choices A and B are correct. The other choices (C and D) are incorrect.