the smallest of the white blood cells which also can be involved in humoral immunity is the
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NCLEX-RN

Exam Cram NCLEX RN Practice Questions

1. Which of the following white blood cells is the smallest and can be involved in humoral immunity?

Correct answer: A

Rationale: The correct answer is 'Lymphocyte.' Lymphocytes are the smallest type of white blood cells and play a crucial role in humoral immunity by producing antibodies. Monocytes are actually the largest white blood cells and are involved in phagocytosis rather than humoral immunity. Basophils are a type of granulocyte involved in allergic reactions, and erythrocytes are red blood cells responsible for oxygen transport, not part of the immune system.

2. An adolescent brings a physician's note to school stating that he is not to participate in sports due to a diagnosis of Osgood-Schlatter disease. Which of the following statements about the disease is correct?

Correct answer: C

Rationale: Osgood-Schlatter disease occurs in adolescents during the rapid growth phase when the infrapatellar ligament of the quadriceps muscle pulls on the tibial tubercle, causing pain and swelling in the inferior aspect of the knee. The condition is commonly caused by activities that require repeated use of the quadriceps, such as track and soccer. Choice A is incorrect because Osgood-Schlatter disease is not specifically linked to competitive swimming. Choice B is incorrect as surgical intervention is not usually necessary for this condition. Choice D is incorrect as the student is not trying to avoid physical education but is restricted from participating in sports due to the diagnosis of Osgood-Schlatter disease.

3. A nonimmunized child appears at the clinic with a visible rash. Which of the following observations indicates the child may have rubeola (measles)?

Correct answer: A

Rationale: The presence of small blue-white spots on the oral mucosa, known as Koplik's spots, is characteristic of measles (rubeola) infection. These spots typically appear on the buccal mucosa opposite the second molars, 1-2 days before the rash onset, and last until 2 days after the rash appears. While Koplik's spots are pathognomonic for measles, their absence does not rule out the diagnosis. Therefore, choice A is the correct answer. Choices B, C, and D are incorrect because the rash pattern, presence of low-grade fever, and characteristic appearance of lesions are not specific indicators of measles infection.

4. All of the following are essential components of supervision EXCEPT:

Correct answer: B

Rationale: Supervision in nursing requires key components to ensure effective management. Tasks to be delegated or supervised must align with the nurse's scope of practice to maintain safety and quality care. Adequate time for staff assignment development is essential for efficient workflow. Policies governing nursing practice provide a framework for safe and standardized care. However, the statement 'The necessary tasks require repeated assessments' is not an essential component of supervision. Tasks should be clear, achievable, and not necessitate repeated assessments, as this would impede delegation and efficient completion. Repeated assessments may indicate unclear task delegation or inadequate initial assessment, which should be avoided in effective supervision.

5. The nurse is speaking at a community meeting about personal responsibility for health promotion. A participant asks about chiropractic treatment for illnesses. What should be the focus of the nurse's response?

Correct answer: B

Rationale: The focus of the nurse's response should be on spinal column manipulation when discussing chiropractic treatment for illnesses. Chiropractic theory emphasizes that misalignment of the vertebrae can interfere with the transmission of mental impulses between the brain and body organs, leading to diseases. Manipulation is aimed at reducing such misalignments, known as subluxations. While mind-body balance and exercise of joints are important aspects of holistic health, in the context of chiropractic treatment, the key intervention is spinal column manipulation to address vertebral misalignments. Therefore, choices A, C, and D are incorrect as they do not directly address the primary focus of chiropractic treatment.

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