What is line “F” pointing to?

Correct Answer: A

Rationale: The correct answer is A: Ductus epididymis. Line "F" is pointing to the ductus epididymis, which is a part of the male reproductive system where sperm mature and are stored. The ductus epididymis is located at the top of the testis and is connected to the rete testis. It is responsible for transporting sperm from the testis to the vas deferens. Explanation for incorrect choices: B: Rete testis - The rete testis is a network of tubules located within the testis, not the ductus epididymis. C: Efferent duct - Efferent ducts are small ducts that connect the rete testis to the epididymis, not the ductus epididymis itself. D: Afferent duct - Afferent ducts are responsible for transporting sperm from the rete testis to the epididymis, not within the epid

Correct Answer: C

Rationale: The correct answer is C: Fallopian tubes. These tubes are also known as uterine tubes because they connect the ovaries to the uterus, allowing eggs to travel from the ovaries to the uterus. The other choices are incorrect because: A: Vas deferens is a tube that carries sperm from the epididymis to the urethra in males. B: Epididymis is a coiled tube located on the back of each testicle where sperm mature. D: Vagina is the muscular tube that connects the cervix to the external genitalia in females.

Correct Answer: C

Rationale: The correct answer is C: Vasovasostomy. This procedure involves reconnecting the vas deferens to reverse a vasectomy, allowing sperm to be present in the ejaculate again. Orchiopexy (A) is the surgical fixation of a testicle in the scrotum and is not related to reversing sterilization. Vasectomy (B) is the sterilization procedure itself, not the reversal. Bilateral orchiectomy (D) is the surgical removal of both testicles and is a permanent sterilization method, not a reversal procedure. Therefore, the correct choice is C as it directly addresses the reversal of male sterilization.

Correct Answer: B

Rationale: The correct answer is B: Flagella. Flagella are whip-like structures that provide motility to sperm cells. They enable the sperm cell to move towards the egg for fertilization. Cilia (choice A) are shorter hair-like structures involved in movement but are not found on sperm cells. Pseudopodia (choice C) are temporary projections used for cell movement in some organisms, not sperm cells. Dendritic processes (choice D) refer to branching extensions of nerve cells, not involved in sperm motility. Therefore, flagella is the most appropriate choice for the hair-like process on the sperm cell that makes it motile.

Correct Answer: D

Rationale: The correct answer is D: Scapula. The scapula is commonly known as the shoulder blade and is the bone that connects the upper arm bone (humerus) to the collarbone (clavicle) to form the shoulder joint. The other choices, A: Clavicle, is the collarbone; B: Sternum, is the breastbone; and C: Humerus, is the upper arm bone, are not specifically referred to as the shoulder bone. Therefore, the scapula is the correct answer as it is directly associated with the shoulder joint.