题目
题目

Anatomy and Physiology Systems II (1017MSC_NA_3255)

单项选择题

Which of the following statements is correct?

选项
A.Contraction of the detrusor muscle prevents voiding
B.For micturition to occur, the external urethral sphincter must be open and the internal urethral sphincter must be closed
C.In adolescents, descending circuits from the pontine control centres (long reflexes) begin to override the spinal micturition reflex
D.Long pontine reflexes can overcome local spinal reflexes to prevent micturition
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标准答案
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思路分析
The question asks which statement is correct about micturition and its neural control. Option A: 'Contraction of the detrusor muscle prevents voiding' — This is incorrect. Detrusor contraction is the primary motor event that drives voiding by increasing bladder pressure, not preventing it. In contrast, its relaxation during storage helps m......Login to view full explanation

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