Stretching of the bladder reflexively causes all of the following EXCEPT
A) micturition.
B) excitation of parasympathetic neurons, causing the detrusor muscles to contract.
C) inhibition of somatic neurons to the external urethral sphincter, causing the sphincter to open.
D) excitation of sympathetic neurons, causing the internal urethral sphincter to relax.
E) opening of the urethral sphincters.
Answer: D) excitation of sympathetic neurons, causing the internal urethral sphincter to relax.
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a. myasthenia gravis b. muscular dystrophy c. amyotrophic lateral sclerosis d. tetanus
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A) hypothalamus. B) thalamus. C) limbic system. D) somatosensory cortex.
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