Which statement represents the correct order of the reflex arc for micturition?
A. The reflex arc begins with stretch receptors in the urinary bladder's walls - parasympathetic neurons go from the spinal cord to the detrusor muscle - stretch receptors send signals to the sacral region of the spinal cord - the detrusor muscle contracts the internal urethral sphincter relaxes - urine is passed.
B. The reflex arc begins with stretch receptors in the urinary bladder's walls - stretch receptors send signals to the sacral region of the spinal cord - the detrusor muscle contracts the internal urethral sphincter relaxes - parasympathetic neurons go from the spinal cord to the detrusor muscle - urine is passed.
C. The reflex arc begins with stretch receptors in the urinary bladder's walls - stretch receptors send signals to the sacral region of the spinal cord - parasympathetic neurons go from the spinal cord to the detrusor muscle - the detrusor muscle contracts the internal urethral sphincter relaxes - urine is passed.
D. The reflex arc begins with stretch receptors sending signals to the sacral region of the spinal cord - stretch receptors receive signals in the urinary bladder's walls - the detrusor muscle contracts the internal urethral sphincter relaxes - parasympathetic neurons go from the spinal cord to the detrusor muscle - urine is passed.
Answer: C
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