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.
C) The smooth muscle sphincter at the base of the urinary bladder closes.
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The middle, muscular portion of the heart wall is referred to as the
a. endocardium. b. myocardium. c. myometrium. d. endometrium. e. myoma.
Tastes associated with caffeine, quinine, or aspirin are detected primarily by ________ taste receptors
A) umami B) bitter C) sour D) salty E) sweet
The penis becomes erect due to action potentials from the ________ part of the nervous system.
A. parasympathetic B. sympathetic C. somatic D. autonomic
What is not true of connective tissue?
A) All connective tissues contain elastic fibers. B) It contains both cells and noncellular, nonliving material. C) Its matrix is produced by the cells within the tissue. D) Its matrix contains fibers.