Within the male urethra,how is urine prevented from mixing with semen during ejaculation?
A) Conscious control of a sphincter muscle guarding the bladder opening
B) Contraction of the detrusor muscle of the bladder
C) By the urinary meatus
D) Reflex closure of sphincter muscles guarding the bladder opening

Question

Quizplus · Accepted Answer

During ejaculation, automatic reflex closure of the sphincter muscles guarding the bladder opening prevent the flow of urine into the male urethra, ensuring that only semen is ejaculated.

Within the Male Urethra,how Is Urine Prevented from Mixing with Semen