ATI RN
Basic Immune System Quizlet Questions
Question 1 of 5
T-cell receptors or antibodies react with antigens
Correct Answer: B
Rationale: The correct answer is B because T-cell receptors and antibodies recognize antigens through complementary molecular fit. This interaction is based on the specific shape of the antigen-binding site on the receptor or antibody matching the shape of the antigen. This molecular complementarity allows for strong and specific binding between the antigen and the receptor/antibody. Choices A and C are incorrect as the presence of lymphocytes or specific polypeptide chains alone does not explain the mechanism of antigen recognition. Choice D is incorrect because histamine release is not directly related to the interaction between T-cell receptors or antibodies with antigens.
Question 2 of 5
The nurse is caring for a patient who works as a legal secretary. The patient asks the nurse about ways to avoid developing carpal tunnel syndrome (CTS). Which action should the nurse suggest?
Correct Answer: C
Rationale: The correct answer is C: "Acquire a pad to support your wrists while typing." This is the best option as wrist supports can help maintain neutral wrist positioning, reducing strain on the median nerve and decreasing the risk of developing CTS. A: "Exercise your wrists with repetitive flexion movements nightly." - This can actually worsen the symptoms of CTS by putting more strain on the wrists. B: "Wrap your wrists with elastic bandages." - Elastic bandages do not provide the necessary support and may restrict blood flow. D: "Apply warm compresses to wrists every evening." - While warm compresses can provide temporary relief for symptoms, they do not address the underlying cause of CTS.
Question 3 of 5
The nurse is instructing a patient with rheumatoid arthritis about a prescribed exercise program. Which information should the nurse include?
Correct Answer: A
Rationale: The correct answer is A because a consistent exercise routine is important for managing rheumatoid arthritis. Performing exercises every day helps improve joint mobility and strength without causing excessive strain. Option B is incorrect as exercising during inflammation can worsen symptoms. Option C is incorrect as exercising past the point of pain can lead to injury. Option D is incorrect as overcompensating the following day can also lead to injury and disrupt the exercise program's consistency.
Question 4 of 5
Choose the best definition for effector T cells. They are cells that
Correct Answer: D
Rationale: Effector T cells are fully activated, expanded, and capable of carrying out their functions, such as killing infected cells or assisting in immune responses. The correct choice (D) accurately describes the characteristics of effector T cells. They are not naïve cells (A), as they have encountered their specific antigen. They are not just starting to proliferate (B), as they have already undergone extensive proliferation. They have not only been energized (C), but have also completed the necessary steps for full activation and functionality.
Question 5 of 5
The dark zone of germinal centers (GC) is composed of
Correct Answer: A
Rationale: The dark zone of germinal centers is composed of rapidly proliferating B cells. This is because during the dark zone phase of the germinal center reaction, B cells undergo rapid proliferation and somatic hypermutation to generate high-affinity antibodies. T cells and dendritic cells are typically found in the light zone of the germinal centers where B cells interact with them to receive signals for selection. Rapidly proliferating T cells are not typically found in the dark zone. Follicular dendritic cells are present in the light zone where they present antigens to B cells but not in the dark zone where B cell proliferation mainly occurs.