The MPA may provide excitatory input to the spinal cord sexual reflexes through the ________ and inhibitory input to the spinal cord through the ________.
A) periaqueductal gray (PAG); nucleus paragigantocellularis (PGi) of the medulla
B) PGi; PAG
C) PGi; rostral thalamus
D) lateral amygdala; medial thalamus
E) lateral amygdala; medial hypothalamus

Question

Quizplus · Accepted Answer

The periaqueductal gray (PAG) is a key structure in the regulation of sexual behavior and is known to provide excitatory input to the spinal cord sexual reflexes. The nucleus paragigantocellularis (PGi) of the medulla, on the other hand, is known to provide inhibitory input to the spinal cord. The MPA may provide both excitatory input (through the PAG) and inhibitory input (through the PGi) to the spinal cord sexual reflexes.

The MPA May Provide Excitatory Input to the Spinal Cord