Morphology of fibrocytic disease:

Correct Answer: C

Rationale: The correct answer is C: Epithelial hyperplasia. Fibrocytic disease involves nonproliferative and proliferative fibrocystic changes in the breast tissue. Epithelial hyperplasia is a common proliferative change seen in fibrocystic disease, characterized by increased number of epithelial cells in the ducts and lobules. Apocrine metaplasia, choice A, is another common change in fibrocystic disease but is not specific to morphology. Proliferation of ductules, choice B, is not a characteristic feature of fibrocystic disease. Giant cells, choice D, are not typically associated with fibrocystic changes.

Correct Answer: C

Rationale: The correct answer is C: ampulla. The ampulla is a dilated portion at the end of the vas deferens where it joins with the duct of the seminal vesicle to form the ejaculatory duct. This structure serves as a storage and mixing area for sperm and seminal fluid before ejaculation. The other choices, A: ductus deferens, is another name for the vas deferens itself; B: seminal vesicle is a gland that produces seminal fluid but is not the dilated sac at the end of the vas deferens; D: ejaculatory duct is formed by the union of the vas deferens and the duct of the seminal vesicle, it is not the dilated sac itself.

Correct Answer: A

Rationale: The correct answer is A, loss of body hair. Testosterone is responsible for thickening of the larynx, anabolism of skeletal muscle, and thickening of bones. It promotes growth and development of male secondary sexual characteristics, such as increased body hair. Therefore, loss of body hair is not a function of testosterone. Choice B, thickening of the larynx, is correct because testosterone contributes to the deepening of the voice by thickening the vocal cords. Choice C, anabolism of skeletal muscle, is correct as testosterone enhances protein synthesis in muscles, leading to muscle growth. Choice D, thickening of bones, is correct because testosterone promotes bone growth and mineralization.

Correct Answer: A

Rationale: The correct answer is A: perimetrium. The perimetrium is the outer serosal layer of the uterus, providing protection and support. The other choices are incorrect: B. cervix is the lower portion of the uterus, C. endometrium is the inner lining where implantation occurs, and D. myometrium is the middle muscular layer of the uterus. The perimetrium is the outermost layer, making it the correct choice.

Correct Answer: B

Rationale: The correct answer is B: corpus luteum. Progesterone is primarily produced by the corpus luteum, which forms from the ruptured ovarian follicle after ovulation. The corpus luteum secretes progesterone to prepare the uterus for potential implantation of a fertilized egg. The Graafian follicle (choice A) is a mature ovarian follicle that contains the egg, but it does not produce progesterone. The secondary follicle (choice C) is an immature ovarian follicle and does not produce progesterone. The adrenal cortex (choice D) is responsible for producing other hormones like cortisol and aldosterone, not progesterone.