The seminal vesicles
a. store sperm prior to ejaculation.
b. supply fructose to be utilized by the sperm for energy.
c. are pierced by the urethra
d. lubricate the urethra prior to an ejaculation
e. all of these answers.
B
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The fetus receives antibodies from the mother which last several weeks after birth. This is an example of ________
A) Natural passive immunity B) Natural active immunity C) Artificial active immunity D) Artificial passive immunity
Decreases in blood pressure turn _____ the thirst center of the brain
A. on B. off
When the lymphatic structures are blocked due to tumors, the result is ________.
A) shrinkage of tissues distal to the blockage due to inadequate delivery of lymph B) severe localized edema distal to the blockage C) increased pressure in the lymphatics proximal to the blockage D) abnormally high lymph drainage from the distal region
The left ventricle pumps blood into the
A) aorta. B) pulmonary veins. C) pulmonary arteries. D) vena cava. E) pulmonary semilunar valves.