The countercurrent heat exchanger that prevents arterial blood from overheating the testes is the ________
A) rete testis
B) pampiniform plexus of veins
C) epididymis
D) scrotal portal system
E) blood-testis barrier
B
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A joint in which the bone can move in two planes is said to be ________.
Fill in the blank(s) with the appropriate word(s).
The term "swollen glands" is usually meant to refer to lymph nodes in which
A. the valves of afferent vessels are bulging. B. macrophages are clogging afferent lymphatic vessels. C. lymphocytes are proliferating in germinal centers. D. phagocytes are consuming the infected lymph nodes. E. macrophages are entering at the hilum.
Muscle tone is ________
A) the condition of athletes after intensive training B) a state of sustained partial contraction C) the ability of a muscle to efficiently cause skeletal movements D) the feeling of well-being following exercise
Aldosterone promotes the homeostasis of ions by causing the kidneys to
A) excrete sodium and potassium. B) conserve sodium and potassium. C) conserve sodium and excrete potassium. D) excrete sodium and conserve potassium.