Acrosome is filled with _________.

Correct Answer: C

Rationale: The correct answer is C: Digestive enzymes. The acrosome is a specialized organelle found in the head of sperm cells and is filled with enzymes that are crucial for fertilization. These enzymes help the sperm penetrate the outer layers of the egg during fertilization. Choice A (Lipids) is incorrect because the acrosome primarily contains enzymes, not lipids. Choice B (Hormones) is incorrect as hormones are not stored in the acrosome. Choice D (None of the above) is incorrect as the acrosome does indeed contain digestive enzymes essential for the sperm's fertilization process.

Correct Answer: C

Rationale: The correct answer is C: Proliferative phase. During this phase, the endometrium thickens in preparation for a potential implantation of a fertilized egg. This phase occurs after the menstrual phase and before ovulation, marking the time when the ovarian follicles are developing under the influence of FSH. The other choices are incorrect because the menstrual phase (A) refers to the shedding of the endometrium, the preovulatory phase (B) occurs just before ovulation, and the follicular phase (D) includes both the menstrual and preovulatory phases.

Correct Answer: A

Rationale: The correct answer is A: dihydrotestosterone (DHT). DHT is a potent form of testosterone responsible for male sexual development, including the formation of the urethra, prostate, and external genitals. It binds to androgen receptors in target tissues, promoting their growth and differentiation. FSH (Choice B) is follicle-stimulating hormone, which primarily regulates sperm production in males. Progesterone (Choice C) is a female sex hormone involved in the menstrual cycle and pregnancy. Estrogen (Choice D) is a female sex hormone responsible for female reproductive development. Thus, A is the correct answer as it specifically pertains to male sexual differentiation.

Correct Answer: D

Rationale: The correct answer is D: Fimbriae. Fimbriae are the fingerlike projections at the end of the fallopian tubes that help capture the released egg from the ovary. They create a sweeping motion to guide the egg into the tube for fertilization. Cilia (A) are hair-like projections that help with movement, but they are not specific to the fallopian tubes. Papillae (B) are small, raised projections found in various organs, not in the fallopian tubes. Flagellae (C) are whip-like structures used for movement in some cells, not found in the fallopian tubes. In summary, fimbriae are specifically designed to capture and guide the egg, making them the correct choice.

Correct Answer: C

Rationale: Step-by-step rationale for why choice C is correct: 1. PID stands for Pelvic Inflammatory Disease. 2. PID is an infection of the female reproductive organs, including the uterus, fallopian tubes, and ovaries. 3. Symptoms include pelvic pain, abnormal vaginal discharge, fever, and painful urination. 4. Choice A is incorrect because PID does not specifically refer to the prostate. 5. Choice B is incorrect as PID does not involve infiltration but rather inflammation. 6. Choice D is incorrect as PID is not a disorder that inhibits the prostate.