The micturition reflex results in
A. vigorous contraction of the smooth muscle of the large intestine and relaxation of anal sphincters.
B. contraction of smooth muscle in the bladder and relaxation of urinary sphincters.
C. a decrease in blood pressure due to a slowing of heart rate.
D. retention of urine and feces by relaxing some muscles and contracting others.
B
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In the body, a joint serves as a ________ for a long bone
A. fulcrum B. lever C. effort arm D. resistor
________ exists when the immune system does NOT respond to a particular antigen.
Fill in the blank(s) with the appropriate word(s).
Which of the following statements about norepinephrine is FALSE?
A. Norepinephrine is a neurotransmitter. B. Norepinephrine binds to adrenergic receptors. C. Norepinephrine is a catecholamine. D. Dopamine is a precursor to norepinephrine. E. Epinephrine is a precursor to norepinephrine.
Which of the following is a posterior thigh muscle?
A. quadriceps femoris B. sartorius C. biceps femoris D. tensor fasciae latae E. gracilis