First slide

Micturition

Question

Micturition is facilitated due to

Easy

A

contraction of the internal urethral sphincter
B

relaxation of the internal urethral sphincter
C

contraction of the external urethral sphincter
D

relaxation of smooth muscles of bladder.

Solution

For the process of micturition(release of urine) the smooth muscles of the urinary bladder contract and internal urethral sphincter relax simultaneously. Internal urethral sphincter is involuntary.

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