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

question 14

Multiple Choice

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

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