which mineral is a principal component of cell membranes
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Nursing Elites

ATI RN

ATI Nutrition Proctored Exam 2023

1. Which mineral is a principal component of cell membranes?

Correct answer: A

Rationale: Phosphorus is the correct answer. It is a key component of cell membranes, being part of the phospholipid bilayer that provides structure and controls the movement of substances in and out of cells. Magnesium, iron, and iodine do not serve as principal components of cell membranes. Magnesium is involved in various enzymatic reactions, iron is essential for oxygen transport, and iodine plays a role in thyroid hormone synthesis.

2. During times of staff and financial shortage, which method is the best and most effective?

Correct answer: D

Rationale: During times of staff and financial shortage, the Modular Method is considered the best and most effective. This method allows for flexibility and adaptability in assigning tasks and responsibilities, making it easier to cope with limited resources. Functional Method (Choice A) focuses on the division of labor based on each staff member's skills, which may not be the most efficient during shortages. Primary Nursing (Choice B) and Team Nursing (Choice C) may require a more significant number of staff, making them less suitable during shortages.

3. Which nursing diagnosis has nutritional implications?

Correct answer: A

Rationale: Impaired dentition affects a patient's ability to chew and consume a variety of foods, leading to potential nutritional deficiencies and malnutrition.

4. You are an ostomy nurse and you know that colostomy is defined as:

Correct answer: A

Rationale: Patient safety and efficacy of care depend on actions rooted in established nursing protocols that consider both the immediate and long-term needs of the patient.

5. A client is being prepared for placement of a catheter for total parenteral nutrition. Which of the following access sites should be planned for catheter insertion?

Correct answer: B

Rationale: The correct answer is the Right subclavian vein. When preparing a client for placement of a catheter for total parenteral nutrition, the preferred access site for catheter insertion is the subclavian vein due to its large size, central location, and lower risk of infection compared to peripheral veins. The other options provided (Left antecubital vein, Right femoral artery, and Left arm radial artery) are not suitable access sites for central venous catheter insertion for total parenteral nutrition.

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