Which of the following would be most likely to occur in an adult male whose Sertoli cells have begun to produce excessive amounts of inhibin?
A. FSH secretion would be selectively inhibited, but LH secretion would be normal.
B. Spermatogenesis would be increased but testosterone secretion would be normal.
C. Spermatogenesis would be increased because testosterone production would be above normal.
D. Gonadotropin-releasing hormone levels and spermatogenesis would increase above normal.
E. Both FSH and LH secretion would rise above normal levels.
A
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Rouleaux refers to the ability of RBCs to
A) carry hemoglobin. B) form stacks. C) squeeze through small capillaries smaller than their cell diameter. D) establish a large surface area-to-volume ratio. E) live without a nucleus.
Because net inward pressure in the venular ends of capillaries is less than net outward pressure in the arteriolar ends of capillaries,
A. the pressure in the venules increases. B. more fluid leaves the capillaries than returns. C. the lymphatic vessels push fluid into the capillaries. D. more fluid flows into the capillaries than moves out.
Which of the following describes the suprahyoid muscles?
A) They depress the larynx and hyoid bone if the mandible is fixed. B) They are a group of muscles that lie superior to the hyoid bone and help form the floor of the oral cavity. C) They move the pharynx superiorly during swallowing. D) They are often called strap muscles.
What are the three main muscle types?
a. skeletal, rough, and smooth b. flexion, extension, and rotation c. skeletal, cardiac, and smooth d. thick, thin, and flat e. skeletal, arterial, and venous