Two inner folds, or ___________ minora, cover and protect the vaginal opening

Correct Answer: C

Rationale: The correct answer is C: labia. The labia minora are two inner folds that cover and protect the vaginal opening. This is because the labia minora are part of the external female genitalia and specifically designed to provide protection to the vaginal opening. A: Uterus - Incorrect. The uterus is a separate organ and is not involved in covering or protecting the vaginal opening. B: Fallopian tubes - Incorrect. The fallopian tubes are part of the reproductive system but are not located near the vaginal opening or involved in its protection. D: Vagina - Incorrect. While the vagina is connected to the vaginal opening, it is not the structure that directly covers and protects it.

Correct Answer: A

Rationale: The correct answer is A because the ejaculatory duct is formed by the joining of the deferent duct (vas deferens) with the seminal vesicle duct. This is important for transporting sperm and seminal fluid towards the urethra for ejaculation. Choice B is incorrect because the ejaculatory duct does not open directly into the urethra; rather, it joins with the urethra. Choice C is incorrect as the ejaculatory duct is not extratesticular; it is located within the prostate gland. Choice D is incorrect as the ejaculatory duct is not located within the testicle; it is formed outside the testicle by the union of other structures.

Correct Answer: D

Rationale: The correct answer is D because the spermatozoon contains the Y sex chromosome, determining male characteristics. Sperm cells are haploid and carry only one set of chromosomes, including either an X or Y sex chromosome. The presence of the Y chromosome leads to the development of male offspring. Choice A is incorrect as sperm cells do not contain somatic chromosomes. Choice B is incorrect as sperm cells contain one pair of sex chromosomes, not just one. Choice C is incorrect because sperm cells can carry either the X or Y sex chromosome, not specifically the X chromosome.

Correct Answer: A

Rationale: The correct answer is A: the uterus. The ovary connects to the uterus via ligaments called ovarian ligaments. This connection is essential for the transfer of eggs from the ovary to the uterus during the menstrual cycle and for providing support to the ovary. The other choices are incorrect as the ovary does not directly connect to the Fallopian tubes (B), rectum (C), or pelvic walls (D) via ligaments. The connection to the uterus is crucial for reproductive functions and maintaining the structural integrity of the female reproductive system.

Correct Answer: A

Rationale: The correct answer is A because Fallopian tubes are indeed funnel-shaped, with edges flared towards the uterus. This shape helps capture the released egg from the ovary and guide it towards the uterus for potential fertilization. The other choices are incorrect because the medial extremity does not display flares (B), the Fallopian tube is not directly linked to the uterus through the uterine ostium (C), and the lateral extremity does not open in the abdominal cavity (D). Therefore, choice A is the most accurate description of the Fallopian tubes based on their anatomy and function.