What is the function of a gland?
A. To secrete hormones
B. To target certain tissues
C. To produce hormones
D. All of the answers are correct.
Answer: D
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The role of inhibin in male reproduction is to
A) decrease the production of testosterone. B) keep testosterone levels high inside the seminiferous tubule. C) stimulate the testes to descend. D) stimulate spermiogenesis. E) provide negative feedback regulation of FSH and GnRH secretion.
How would a decrease in the number of megakaryocytes affect blood composition?
A. A decrease in megakaryocytes would decrease the number of platelets in the blood. B. A decrease in the number of megakaryocytes would decrease the number of leukocytes in the blood. C. A decrease in the number of megakaryocytes would decrease the number of immunoglobulins in the blood. D. A decrease in the number of megakaryocytes would decrease the number of fibrinogens in the blood.
Which of the following is NOT a hormone produced by the adrenal cortex?
a. cortisol b. adrenocorticotropic hormone c. aldosterone d. corticosterone e. dehydroepiandrosterone
Which of the following skin changes is usually associated with aging?
A. Loss of subcutaneous tissue contributes to sagging of the skin. B. The amount of collagen in the dermis increases. C. Localized increase in sebaceous glands leads to dry skin. D. There is an increase in the number of elastic fibers in the skin. E. Skin becomes thicker.