What is the function of the epididymis in the male reproductive system?

Correct Answer: A

Rationale: The correct answer is A: Maturation and storage of sperm. The epididymis is a coiled tube where sperm mature and are stored before ejaculation. Sperm are produced in the testes, not the epididymis, so choice B is incorrect. Seminal fluid is produced by the seminal vesicles and prostate gland, not the epididymis, making choice C incorrect. Lastly, the vas deferens is responsible for transporting sperm to the urethra, not the epididymis, so choice D is incorrect.

Correct Answer: D

Rationale: Correct Answer: D - Progesterone Rationale: 1. Progesterone maintains the uterine lining for implantation and supports fetal development. 2. It inhibits contractions to prevent premature labor. 3. Estrogen helps with fetal development but is not the primary hormone during pregnancy. 4. Prolactin is responsible for milk production after birth, not fetal development. 5. hCG is produced early in pregnancy but does not directly support fetal development.

Correct Answer: A

Rationale: Estrogen is the correct answer as it is the primary hormone responsible for the development of female reproductive organs like the ovaries, uterus, and breasts. Estrogen plays a crucial role in regulating the menstrual cycle and supporting pregnancy. Testosterone is a male sex hormone. Progesterone is important for maintaining pregnancy and regulating the menstrual cycle. FSH (Follicle-stimulating hormone) stimulates the growth of ovarian follicles but is not directly involved in the development of female reproductive organs.

Correct Answer: A

Rationale: The correct answer is A: Nourish the embryo. During pregnancy, the uterine lining, also known as the endometrium, thickens to provide a rich blood supply and nutrients to support the developing embryo. This lining helps in implantation and facilitates the exchange of oxygen, nutrients, and waste products between the mother and the embryo. Choice B is incorrect as uterine contractions are primarily controlled by the muscles of the uterus. Choice C is incorrect because the uterine lining does not directly support the fetus during delivery; rather, it is the uterine muscles that aid in labor. Choice D is incorrect as the placenta, not the uterine lining, is responsible for providing nutrients to the fetus.

Correct Answer: C

Rationale: The correct answer is C: Provide sexual pleasure. The clitoris is a highly sensitive organ with numerous nerve endings, making it a key structure for sexual arousal and pleasure in females. Stimulation of the clitoris can lead to sexual satisfaction and orgasm. Choices A, B, and D are incorrect because the clitoris does not provide support for the uterus, facilitate sperm entry, or support the vaginal walls. It is important to differentiate between the functions of different reproductive organs to understand their roles in the body.