Which structure lies posterior to the bladder and anterior to the rectum and secretes an alkaline, fructose filled fluid?

Correct Answer: C

Rationale: The correct answer is C: Seminal vesicles. These glands are located posterior to the bladder and anterior to the rectum. They secrete an alkaline fluid rich in fructose, which nourishes and supports sperm viability. The other choices are incorrect because: A) The prostate is located below the bladder and surrounds the urethra, secreting a milky fluid; B) The bulbourethral gland is located below the prostate and secretes a clear, viscous fluid; D) The spongy urethra is a part of the male urethra that runs through the penis, responsible for transporting urine and semen.

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.

Correct Answer: C

Rationale: The correct answer is C: Foreskin. Circumcision involves the surgical removal of the foreskin, the retractable double-layered fold of skin that covers the head of the penis. This procedure is commonly practiced for cultural, religious, or medical reasons. Removing the glans penis (A) or scrotum (B) would be highly inappropriate and damaging. The vas deferens (D) is a duct that carries sperm from the testes, which is not involved in circumcision. Therefore, the correct anatomical structure that is removed during circumcision is the foreskin.