HESI RN
Reproductive System Exam Questions
1. _______ 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.
2. What is a Carneous Mole defined as?
- A. Occurs when fluids drain from the blood mole, leaving a fresh firm mass.
- B. Occurs when the ovum dies and is expelled.
- C. Occurs when the fetus dies, and the membranes rupture.
- D. Occurs when the fetus survives after a failed abortion attempt.
Correct answer: A
Rationale: A Carneous Mole is defined as when fluids drain from the blood mole, leaving a fresh firm mass. This process leads to the formation of a solid mass resembling tissue. Choice B is incorrect as it describes a different concept known as a missed abortion, where the ovum dies and is expelled. Choice C is incorrect as it describes a situation related to fetal demise and membrane rupture, not specifically the formation of a Carneous Mole. Choice D is incorrect as it refers to a scenario where the fetus survives after a failed abortion attempt, which is distinct from the definition of a Carneous Mole.
3. Which statement accurately describes the female pelvis?
- A. Gynaecoid pelvis has a wedge-shaped inlet
- B. Platypelloid pelvis has an oval inlet
- C. Anthropoid pelvis has a long narrow oval inlet
- D. Android pelvis is wedge-shaped
Correct answer: B
Rationale: The correct answer is B because the Platypelloid pelvis indeed has an oval inlet. Gynaecoid pelvis, not mentioned in the choices, has a round inlet. Anthropoid pelvis has a long, narrow oval inlet, which makes choice C incorrect. Choice D is incorrect as the Android pelvis is actually heart-shaped with a narrowed inlet.
4. During fertilization, the portion of the decidua covering the blastocyst is called:
- A. Decidua basalis
- B. Decidua Vera
- C. Decidua parietalis
- D. Decidua capsularis
Correct answer: D
Rationale: During fertilization, the decidua capsularis is the specific portion of the decidua that covers the blastocyst, providing protection and support. Decidua basalis refers to the part of the decidua located at the site of implantation on the maternal side. Decidua vera is the remainder of the decidua lining the uterus. Decidua parietalis is the portion of the decidua that lines the rest of the uterine cavity, except for the site of implantation. Therefore, in the context of fertilization, the decidua capsularis is the correct answer.
5. What is the content of the acrosome?
- A. Lipids
- B. Hormones
- C. Digestive enzymes
- D. None of the above
Correct answer: C
Rationale: The correct answer is C: Digestive enzymes. The acrosome is a structure found in sperm cells that contains enzymes used to penetrate the egg during fertilization. Choice A (Lipids) and Choice B (Hormones) are incorrect as the primary content of the acrosome is digestive enzymes, not lipids or hormones. Choice D (None of the above) is incorrect as the acrosome does contain a specific substance, which are digestive enzymes.
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