excitatory signals are then transmitted down the spinal cord to the sacral parasympathetic nucleus, stimulating parasympathetic activity of the sacral nerves supplying the penis. the penile smooth muscle then relaxes, and the pelvic arteries dilate. dilated arteries of the penis fill with blood, and corpora cavernosa engorges, and the penis becomes erect.
Capitalize this past sentence correctly.
Excitatory signals are then transmitted down the spinal cord to the sacral parasympathetic nucleus, stimulating parasympathetic activity of the sacral nerves supplying the penis. The penile smooth muscle then relaxes, and the pelvic arteries dilate. Dilated arteries of the penis fill with blood, and corpora cavernosa engorges, and the penis becomes erect.