NEET Biology question
The outline of the principal events of urination is given below in random manner. I. Stretch receptors on the wall of urinary bladder send signal to the CNS II. The bladder fills with urine and becomes distended III. Micturition IV. CNS passes on motor messages to initiate the contraction of smooth muscles of bladder and simultaneous relaxation of urethral sphincter The correct order of steps for urination is
Answer: (A)
Solution
The bladder first fills with urine and becomes distended (II), which stimulates stretch receptors to send a signal to the CNS (I); the CNS then sends a motor message to
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