Erection and ejaculation are both spinal reflexes
Indicate whether the statement is true or false
T
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Smooth muscle is found in the wall of the
A. stomach. B. heart. C. liver. D. bone.
Why doesn’t semen enter the urinary bladder during ejaculation?
A) There is no common duct between the reproductive system and the urinary system. B) There is no urge to urinate during sexual intercourse because of the suppression of LH by testosterone buildup in the blood. C) The smooth muscle sphincter at the base of the urinary bladder closes. D) Ejaculation is a parasympathetic reflex resulting in no response by urinary contraction muscles.
Which white blood cells secrete heparin?
a. eosinophils b. monocytes c. neutrophils d. basophils
A stimulus just strong enough to produce a single action potential is a
A) maximal stimulus. B) subthreshold stimulus. C) supramaximal stimulus. D) threshold stimulus.