which physiologic role does vitamin c play in the body which physiologic role does vitamin c play in the body
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Nursing Elites

ATI RN

ATI Nutrition Proctored Exam

1. Which physiologic role does vitamin C play in the body?

Correct answer: C

Rationale: Vitamin C plays a crucial role in protecting the integrity of cellular membranes. It is essential for collagen synthesis, which is important for wound healing and maintaining skin, blood vessels, and other tissues. Choice A is incorrect as the transcription of DNA to RNA is facilitated by vitamin A. Choice B is incorrect as calcium absorption and regulation are functions of vitamin D. Choice D is incorrect as vitamin K serves as a catalyst for the synthesis of blood-clotting factors, not vitamin C.

2. A nurse is completing an assessment of a recently widowed older adult client. He states he is unable to drive and is afraid to cook on the stove. Which of the following community resources should the nurse recommend?

Correct answer: B

Rationale: The correct answer is B: Meals on Wheels. Meals on Wheels is a community resource that provides food for older adults who are unable to cook for themselves, promoting independence and ensuring proper nutrition. Hospice care (choice A) focuses on providing comfort and support for individuals with life-limiting illnesses; it is not primarily aimed at providing meals. Home health services (choice C) typically involve skilled nursing care and therapy services provided in the home setting, rather than meal delivery. The American Association of Retired Persons (choice D) offers advocacy, support, and resources for older adults but does not directly address the specific needs mentioned in the client's situation.

3. The client is on amiodarone and reports blurred vision. What is the nurse’s best response?

Correct answer: B

Rationale: Blurred vision is a potential side effect of amiodarone. Instructing the client to report this symptom to the healthcare provider immediately is the most appropriate response. Choice A is incorrect because although blurred vision can be a common side effect of amiodarone, it should not be dismissed without further evaluation. Choice C is incorrect as advising the client to stop taking the medication without consulting the healthcare provider can be dangerous and is not the first course of action. Choice D is too drastic as discontinuing the medication should be done under the guidance of a healthcare provider after proper evaluation.

4. When does cell death first occur?

Correct answer: In the fetus.

Rationale: Cell death, also known as apoptosis, first occurs during fetal development when specific cells are programmed to die. This process is essential for shaping and organizing tissues and organs. Choices A, B, and C are incorrect because cell death begins much earlier, during fetal development, rather than later in life or at puberty. Understanding the timing of cell death in different stages of life is crucial in developmental biology.

5. A nurse is preparing to perform a 12-lead electrocardiogram (ECG). Which of the following instructions should the nurse provide to the client?

Correct answer: A

Rationale: The correct answer is A. Instructing the client to remain still once the gel pads are attached is crucial to obtaining accurate ECG readings. Choice B is incorrect as electrodes are typically placed on the chest, not the breast. Choice C is incorrect because the client should lie flat during an ECG, not sit up. Choice D is incorrect because the client should breathe normally, rather than holding their breath, throughout the procedure.

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