which type of cell is responsible for producing antibodies in the immune system
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PN Exit Exam 2023 Quizlet

1. Which type of cell is responsible for producing antibodies in the immune system?

Correct answer: A

Rationale: The correct answer is A: B lymphocytes. B lymphocytes (B cells) are a crucial part of the adaptive immune system. They produce antibodies, which are proteins that specifically target and neutralize pathogens such as bacteria and viruses. T lymphocytes (choice B) are involved in cell-mediated immunity rather than antibody production. Macrophages (choice C) are phagocytic cells that engulf and digest pathogens but do not produce antibodies. Neutrophils (choice D) are a type of white blood cell that primarily function in the innate immune response by phagocytosing pathogens.

2. What is the primary purpose of performing range-of-motion (ROM) exercises?

Correct answer: B

Rationale: The primary purpose of performing range-of-motion (ROM) exercises is to prevent muscle atrophy and joint contractures. These exercises are crucial in maintaining joint mobility and muscle flexibility, especially in patients who are immobilized or have limited mobility. Improving cardiovascular fitness (Choice A) involves different types of exercises that target the heart and blood vessels, not specifically ROM exercises. Increasing respiratory function (Choice C) is typically achieved through breathing exercises and activities that enhance lung capacity. Enhancing cognitive function (Choice D) is usually addressed through cognitive exercises and activities that stimulate brain function.

3. An older postoperative client has the nursing diagnosis 'impaired mobility related to fear of falling.' Which desired outcome best directs the PN's actions for the client?

Correct answer: C

Rationale: The correct answer is C. Using self-affirmation statements helps the client reduce fear and regain confidence in mobility, which is essential for improving impaired mobility. Choice A focuses more on the frequency of ambulation rather than addressing the fear of falling. Choice B involves the physical therapist and the use of a walker, which may not directly address the client's fear. Choice D is a safety measure but does not specifically target the client's fear of falling.

4. In which condition is the 'butterfly rash' most commonly seen?

Correct answer: A

Rationale: The correct answer is A: Systemic lupus erythematosus (SLE). The 'butterfly rash' across the cheeks and nose is a classic sign of SLE, an autoimmune disease. This rash is a key dermatological manifestation of SLE, often triggered or worsened by exposure to sunlight. Choices B, C, and D are incorrect because the 'butterfly rash' is not commonly associated with rheumatoid arthritis, psoriasis, or dermatomyositis.

5. The nurse and unlicensed assistive personnel (UAP) are providing care for a client who exhibits signs of neglect syndrome following a stroke affecting the right hemisphere. What action should the nurse implement?

Correct answer: A

Rationale: The correct action for the nurse to implement is to demonstrate to the UAP how to approach the client from the client's left side. Approaching the client from the neglected side (left side) can help in retraining the brain and improving awareness of the affected side, which is crucial in the management of neglect syndrome. Choice B is incorrect as assessing the client's body for bruising is not directly related to managing neglect syndrome. Choice C is incorrect as observing the interaction between the client and family members does not address the specific intervention needed for neglect syndrome. Choice D is incorrect because protecting the client's left side when transferring to a chair does not actively involve retraining the brain and improving awareness of the neglected side, which is the primary goal in managing neglect syndrome.

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