Release their secretions to mix with the sperm cells and mucous from the bulbo urethral glands. Contracts expelling the semen into the distal urethra and out. Orgasm A complex of sensory and motor activities which include, rapid HR, inc. BP, inc. is resp, and a pleasurable sensation along with the events of ejaculation. Sympathetic signals - following orgasm a series of symp signal counter the parasympathetic and the afferent vessel constrict and efferent open.
Blood flows out of the cavernous spaces of the penis.
Detumescence - occurs. State of flaccidity following an orgasm. A negative feedback mechanism. Made by the s ustenticular cells . Testosterone has a number of functions.