Which gland produces seminal fluid?

Correct Answer: D

Rationale: The correct answer is D, "All of the above." The prostate gland, seminal vesicles, and bulbourethral gland all contribute to the production of seminal fluid. The prostate gland produces a milky fluid, the seminal vesicles produce a fluid rich in fructose, and the bulbourethral gland produces a clear lubricating fluid. Together, these glands provide the necessary components for semen, which is essential for sperm viability and motility. Therefore, all three glands are involved in the production of seminal fluid, making choice D the correct answer.

Correct Answer: B

Rationale: The primary function of the testes is to produce sperm, making option B the correct answer. Sperm production occurs in the seminiferous tubules within the testes. Estrogen production primarily occurs in the ovaries, not the testes (eliminating choice A). Storing sperm is mainly the role of the epididymis, not the testes (eliminating choice C). Testosterone secretion is a crucial function of the testes, but it is not the primary function (eliminating choice D). In summary, the testes' primary function is to produce sperm, making it the correct choice.

Correct Answer: C

Rationale: The correct answer is C: LH (Luteinizing Hormone). LH is responsible for triggering ovulation, the release of an egg from the ovary. It surges around mid-cycle to stimulate the mature egg's release. Estrogen and progesterone play roles in the menstrual cycle but do not directly trigger ovulation. FSH (Follicle-Stimulating Hormone) helps in follicle development but does not induce ovulation. Therefore, LH is the hormone specifically responsible for this crucial reproductive process in females.

Correct Answer: A

Rationale: The correct answer is A: Placenta. The placenta is responsible for providing nutrients and oxygen to the developing fetus through the umbilical cord. It acts as a barrier between the mother and the fetus, allowing for the transfer of essential substances while protecting the fetus from harmful substances. The ovary (B) is involved in producing eggs but does not provide nutrients to the fetus. The fallopian tube (C) is where fertilization typically occurs, not nutrient transfer. The cervix (D) is the lower part of the uterus that connects to the vagina and plays a role in childbirth, but it is not responsible for providing nutrients and oxygen to the fetus.

Correct Answer: A

Rationale: The correct answer is A: FSH (Follicle-Stimulating Hormone). FSH stimulates the growth and maturation of ovarian follicles in the ovaries. It plays a crucial role in the development of eggs and the regulation of the menstrual cycle. LH (Choice B) is responsible for ovulation, estrogen (Choice C) is produced by the developing follicle, and progesterone (Choice D) is primarily involved in preparing the uterus for pregnancy.