ATI RN
ATI Immune System Quizlet Questions
Question 1 of 5
To produce better flu vaccines, we want:
Correct Answer: D
Rationale: The correct answer is D because all the options contribute to improving flu vaccines. A cytotoxic T cell response can help block viral spread, strain-specific neutralizing antibodies can prevent viral entry, and targeting less variable regions of HA with antibodies can improve recognition across strains. Each approach addresses different aspects of the immune response to enhance vaccine efficacy. Therefore, combining these strategies can lead to a more comprehensive and effective flu vaccine. Options A, B, and C alone are not sufficient as they only target specific aspects of the immune response, while option D encompasses a holistic approach for better vaccine success.
Question 2 of 5
Which of the following is necessary to produce a T-cell repertoire capable of interacting with self MHC molecules?
Correct Answer: B
Rationale: Positive selection is necessary to produce a T-cell repertoire capable of interacting with self MHC molecules. During positive selection in the thymus, T-cells that can recognize self MHC molecules are retained, ensuring self-tolerance and functionality. Negative selection eliminates self-reactive T-cells. Induction of anergy is a state of T-cell unresponsiveness and does not contribute to the development of a functional T-cell repertoire. Choice A is incorrect as only positive selection is necessary for self MHC recognition.
Question 3 of 5
Match the following:
Correct Answer: C
Rationale: The correct answer is C: 1-b, 2-d, 3-a, 4-c. To determine this, we need to match each item correctly. Step by step: 1) First item is matched with b because it corresponds to the correct sequence. 2) Second item is matched with d as it follows the order. 3) Third item is matched with a as it aligns with the pattern. 4) Fourth item is matched with c to complete the sequence. Other choices lack logical consistency in matching the items as per their correct order, making them incorrect.
Question 4 of 5
Colostrum, the yellowish fluid, secreted by mother during the initial days of lactation is very essential to impart immunity to the newborn infants because it contains:
Correct Answer: D
Rationale: The correct answer is D: Immunoglobulin A. Colostrum contains high levels of Immunoglobulin A (IgA), which is crucial for imparting passive immunity to the newborn. IgA helps protect the infant's mucosal surfaces from infections. Natural killer cells, monocytes, and macrophages are not typically found in colostrum and are not responsible for conferring immunity to the newborn.
Question 5 of 5
The nurse is reinforcing teaching to a person who has tested positive for HIV. Which test should the nurse explain is done to confirm the diagnosis of HIV?
Correct Answer: A
Rationale: The correct answer is A: Western blot. This test is used to confirm the diagnosis of HIV by detecting specific antibodies produced in response to the virus. It is considered the gold standard for confirming HIV infection due to its high specificity and sensitivity. The other choices (B, C, D) are not used to diagnose HIV. Rheumatoid factor and antinuclear antibodies are tests for autoimmune conditions, while immunoglobulin assay measures levels of antibodies in the blood, not specific to HIV.