During male ejaculation, which of the following statements addresses why sperm is not normally seen inside the bladder?
A)
The parasympathetic nervous system keeps the seminal fluid inside the urethra.
B)
The musculature of the trigone area, bladder neck, and prostatic urethra contract at the same time.
C)
With ejaculation, the male expels some urine along with the seminal fluid to wash any extra sperm out of the bladder.
D)
The detrusor muscle relaxes allowing for the closing of the sphincter at the base of the bladder.
Ans:
B
Feedback:
During male ejaculation, which is mediated by the SNS, the musculature of the trigone area and that of the bladder neck and prostatic urethra contracts and prevents the backflow of seminal fluid into the bladder.
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