Nursing Elites

1. What forms the vaginal lining?

• A. Squamous epithelium
• B. Stratified epithelium
• C. Vascular connective tissue
• D. Muscle coat

Correct answer: A

Rationale: The vaginal lining is primarily formed by squamous epithelium. Squamous epithelium is the correct answer because it is the type of epithelium that lines the vaginal canal. Stratified epithelium consists of multiple layers and is not the primary type found in the vaginal lining. Vascular connective tissue and muscle coat are not the main components of the vaginal lining, making them incorrect choices.

2. 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.

3. How does human sperm move?

• A. Flagella
• B. Cilia
• C. Neutrophils
• D. None of the above

Correct answer: A

Rationale: Human sperm moves using flagella, which are whip-like structures that aid in propulsion. Flagella are tail-like structures found in sperm cells and help them swim towards the egg for fertilization. Cilia are shorter, hair-like structures that are not involved in the movement of sperm. Neutrophils are a type of white blood cell involved in the immune response and are not related to sperm locomotion.

4. What is the primary purpose of using pethidine?

• A. Relieve constriction ring.
• B. Relieve pain.
• C. Affect milk production.
• D. Induce labor.

Correct answer: B

Rationale: Pethidine is primarily used to relieve pain. It is an opioid analgesic commonly used for pain relief in various medical settings. Choices A, C, and D are incorrect as pethidine is not indicated for relieving constriction ring, affecting milk production, or inducing labor.

5. Where does the ovum receive the sperm?

• A. Animal pole
• B. Vegetal pole
• C. Zona pellucida
• D. None of the above

Correct answer: C

Rationale: The correct answer is C, 'Zona pellucida.' The ovum receives the sperm at the zona pellucida, which is the glycoprotein layer surrounding the plasma membrane of the oocyte. This layer plays a crucial role in preventing polyspermy. Choices A and B, 'Animal pole' and 'Vegetal pole,' are incorrect as they refer to different regions of the egg and are not where the sperm fertilizes the ovum. Choice D, 'None of the above,' is incorrect as the sperm indeed interacts with the zona pellucida during fertilization.

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