Q25. Parasympathetic stimulation to the bladder initiates the contraction of which muscle?a) Oblique muscleb) Detrusor musclec) Dartos muscled) External urethral sphincter
Question
Q25. Parasympathetic stimulation to the bladder initiates the contraction of which muscle?a) Oblique muscleb) Detrusor musclec) Dartos muscled) External urethral sphincter
Solution
The answer is b) Detrusor muscle.
Here's the step by step explanation:
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The urinary bladder is a muscular sac that stores urine, allowing urination to be infrequent and voluntary.
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The bladder wall has layers of smooth muscle tissue called detrusor muscle.
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The parasympathetic nervous system controls the contraction of the detrusor muscle.
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When the bladder is full, the parasympathetic nervous system sends signals that cause the detrusor muscle to contract.
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This contraction pushes the urine out of the bladder and into the urethra, initiating urination.
So, parasympathetic stimulation to the bladder initiates the contraction of the detrusor muscle.
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