Which of the following is not a function of the Sertoli cells?
a. secreting seminiferous tubule fluid
b. phagocytizing cytoplasm extruded from developing sperm and destroy defective sperm
c. secreting testosterone
d. secreting inhibin
e. providing nourishment for developing sperm
C
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A buildup of fluid in the lungs caused by pneumonia leads to an increase in the
A. physiologic dead space. B. anatomic dead space. C. residual volume.
The adrenal medulla produces
A) mineralocorticoids. B) glucocorticoids. C) catecholamines. D) androgens. E) corticosteroids.
The pH scale measures the
A) number of molecules of salts dissolved in water. B) number of hydroxide ions in water. C) concentration of hydrogen ions in solution. D) strength of an electrical current that a solution carries.
Which trace element and function is correctly matched?
A) Iodine:constituent of several enzymes involved in digestion B) Iron:part of hemoglobin molecule C) Zinc:needed in blood clotting process D) Manganese:essential component for synthesis of thyroid hormones