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79) What effect does the sympathetic nervous system have on micturition? 79) ______ A) Sympathetic activity inhibits muscles of the internal urethral sphincter inhibiting micturition. B) Sympathetic activity excites muscles of the external urethral sphincter allowing micturition. C) Sympathetic activity inhibits muscles of the external urethral sphincter inhibiting micturition. D) Sympathetic activity excites muscles of the internal urethral sphincter allowing micturition.
E) Sympathetic activity excites muscles of the internal urethral sphincter inhibiting micturition. 80) Which of the following is smooth muscle? 80) ______ 81) To voluntarily control urination, the ________ nervous system innervates the ________. 81) ______ 82) During micturition, neural activity to sphincters or detrusor muscles from which of the following is increased? 82) ______
83) In older children and adults, the cerebral cortex is able to block micturition by inhibiting nerve activity tothe 83) ______ A) external urethral sphincter only. B) internal urethral sphincter only. C) detrusor muscle only. D) detrusor muscle and external urethral sphincter. E) internal and external urethral sphincters. 84) Substance X is freely filtered at the glomerulus. 3 mmole X is filtered, 2 mmole X is reabsorbed, and 2 mmole X is secreted per minute. How much X is excreted per minute? 84) ______
85) During tubuloglomerular feedback of glomerular filtration rate, paracrines secreted from what structure(s) cause constriction of the afferent arteriole? 85) ______ 86) In comparison to the distal tubule, the proximal tubule has a 86) ______