PATHOLOGY MCQ
URINARY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the stretching of the bladder wall
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motor neurons
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the pressure of the fluid in the bladder
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the sympathetic efferents
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Detailed explanation-1: -Smooth muscle stretch initiates the micturition reflex by activating stretch receptors in the bladder wall. This autonomic reflex causes the detrusor muscle to contract and the internal urethral sphincter muscle to relax, allowing urine to flow into the urethra.
Detailed explanation-2: -The internal sphincter muscles of the bladder neck and urethra stay closed until your brain sends signals to urinate. The external sphincter muscles surround the internal sphincter and provide extra pressure to keep the urethra closed.
Detailed explanation-3: -Introduction. Urination or micturition removes metabolic products and toxic wastes filtered from the kidneys and is a vital function of the human body. The micturition reflex requires a complex network of signals between the nervous system and the urinary tract system.