ATI RN
Immune System Quizlet Questions
Question 1 of 5
In which of the following locations can IgA be found?
Correct Answer: D
Rationale: IgA can be found in the intestinal lumen, lamina propria, and vesicles of enterocytes. IgA is produced by plasma cells in the lamina propria and transported across the epithelial cells into the intestinal lumen where it provides mucosal immunity. It can also be found in vesicles of enterocytes before secretion. Therefore, the correct answer is D as IgA is present in all of the mentioned locations. Choices A, B, and C are incorrect individually as they only represent specific locations where IgA can be found, not all the locations where IgA is present in the gastrointestinal tract.
Question 2 of 5
Which of the following leukocytes is involved in antibody-dependent cell-mediated cytotoxicity?
Correct Answer: A
Rationale: The correct answer is A: Natural Killer (NK) cells. NK cells are involved in antibody-dependent cell-mediated cytotoxicity by recognizing target cells coated with antibodies and inducing their death. NK cells play a crucial role in immune surveillance and defense against infected or malignant cells. Neutrophils, macrophages, and mast cells are not directly involved in antibody-dependent cell-mediated cytotoxicity. Neutrophils are primarily responsible for phagocytosis, macrophages are antigen-presenting cells, and mast cells are involved in allergic reactions.
Question 3 of 5
Which one of the following processes emerged earliest during the course of evolution?
Correct Answer: C
Rationale: The correct answer is C: Phagocytosis. Phagocytosis is a fundamental process that emerged early in evolution for cellular organisms to engulf and digest particles. This process is essential for basic survival and defense mechanisms. A: Antigen presentation and B: Antibody production are more advanced immune responses that occur in higher organisms and require a complex immune system. D: Thymic education is a process specific to vertebrates involving the maturation and selection of T cells, which is a more evolved mechanism compared to phagocytosis. Therefore, phagocytosis is the earliest process among the options listed as it is essential for basic cellular survival and predates the development of advanced immune responses.
Question 4 of 5
Smack' is a drug obtained from the:
Correct Answer: A
Rationale: The correct answer is A. Smack is a street name for heroin, which is derived from the latex of Papaver somniferum, commonly known as the opium poppy. The latex of this plant contains morphine and codeine, which are the main components of heroin. Cannabis sativa (B) refers to marijuana, not smack. Dhatura (C) and Erythroxylum coca (D) are sources of other drugs like scopolamine and cocaine, respectively, not heroin. Therefore, A is the correct answer as it corresponds to the actual source of smack/heroin.
Question 5 of 5
The nurse is caring for a patient being tested for rheumatoid arthritis. In reviewing laboratory values, which should the nurse recognize as being diagnostic of rheumatoid arthritis?
Correct Answer: A
Rationale: The correct answer is A because an elevated C-reactive protein level indicates inflammation, which is a key feature of rheumatoid arthritis. Rheumatoid factor (choice B) is positive in only 70-80% of patients with rheumatoid arthritis, so a negative result does not rule out the disease. White blood cell count (choice C) and antinuclear antibody test (choice D) are not specific to rheumatoid arthritis. In summary, an elevated C-reactive protein level is a more reliable indicator of the disease compared to the other options provided.