A 68-year old man is unable to voluntarily empty his bladder. The micturation re

Question

A 68-year old man is unable to voluntarily empty his bladder. The micturation reflex is functioning normally. He has normal levels of plasma creatinine.

Which of the following is a most likely reason for the bladder malfunction?

A 68-year old man is unable to voluntarily empty his bladder. The micturation reflex is functioning normally. He has normal levels of plasma creatinine.

Which of the following is a most likely reason for the bladder malfunction?

Parasympathetic nerves fail to control bladder fundus contraction. Kidney stones prevent urine transfer to the bladder. Sympathetic nerves fail to control the internal sphincter. Ureter cannot perform the peristaltic contractions. External sphincter failure.

Explanation / Answer

Correct answer:- (a) parasympathetic nerves fail to control bladder contraction.

Explanation:- effect of automatic nervous system on urinary bladder---

(S) – constricts sphincter and relaxes urinary bladder
(P) – tenses urinary bladder and relaxes sphincter to eliminate urine.

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