posterior to the vagina lies the

HESI RN

Reproductive Health Exam Questions And Answers

1. What structure lies posterior to the vagina?

A. Pouch of Douglas
B. Rectum
C. Perineal body
D. Structures of the vulva

Correct answer: B

Rationale: The correct answer is B: Rectum. The rectum is located posterior to the vagina in the pelvic cavity. The Pouch of Douglas (choice A) is a peritoneal pouch located between the rectum and the uterus. The perineal body (choice C) is a fibrous structure located between the vagina and the anus. Structures of the vulva (choice D) are external genital structures surrounding the vaginal opening, not posterior to the vagina.

2. What is one of the roles of the oxytocin hormone?

A. Stimulates milk ejection.
B. Stimulates the production of milk.
C. Stimulates the development of lactoferrin.
D. Stimulates the secretion of relaxin.

Correct answer: A

Rationale: The correct answer is A: 'Stimulates milk ejection.' Oxytocin is responsible for contracting the muscles around the milk ducts, pushing milk into the nipples for breastfeeding. This process is known as milk ejection or let-down. The other choices are incorrect because oxytocin's primary function is to facilitate milk ejection rather than directly stimulating the production of milk, the development of lactoferrin, or the secretion of relaxin.

3. After fertilization, cell division occurs through a process of:

A. Binary fission
B. Meiosis
C. Budding
D. Mitosis

Correct answer: D

Rationale: After fertilization, the zygote undergoes cell division through the process of mitosis. Mitosis is the type of cell division that results in two daughter cells with the same number of chromosomes as the parent cell. Choice A, binary fission, is a form of asexual reproduction in prokaryotes, not the process that occurs after fertilization in multicellular organisms. Choice B, meiosis, is a type of cell division that leads to the formation of gametes with half the number of chromosomes, not the process that occurs after fertilization. Choice C, budding, is a form of asexual reproduction seen in some organisms like yeast, but it is not the process of cell division after fertilization.

4. A diet rich in _______ controls menopause symptoms:

A. Carbohydrates
B. Soya items
C. Fruits and veggies
D. Eggs and meat

Correct answer: B

Rationale: A diet rich in soya items can help control menopause symptoms. Soya contains phytoestrogens, which are plant-based compounds that mimic the hormone estrogen in the body. These compounds may help alleviate menopause symptoms such as hot flashes and night sweats. Choice A, Carbohydrates, do not specifically target menopause symptoms. Choice C, Fruits and veggies, while generally healthy, do not have the same impact on menopause symptoms as soya. Choice D, Eggs and meat, do not contain phytoestrogens like soya, making them less effective in managing menopause symptoms.

5. _______ is a lytic enzyme released by the sperm.

A. Hyaluronidase
B. Trypsin
C. Helicase
D. None of the above

Correct answer: A

Rationale: Hyaluronidase is the correct answer. It is a lytic enzyme released by the sperm to help penetrate the egg's protective layer. Trypsin is a digestive enzyme produced in the pancreas, not released by sperm. Helicase is an enzyme involved in DNA replication, not released by sperm. 'None of the above' is incorrect as hyaluronidase fits the description provided in the question.