ATI RN
ATI the Immune System Test Quizlet Questions
Question 1 of 5
Individuals unable to make the J protein found in certain immunoglobulins would be expected to have frequent infections of the
Correct Answer: A
Rationale: The correct answer is A: intestinal tract. The J protein is crucial for the proper functioning of immunoglobulins in the mucosal immune system, which plays a major role in defending against pathogens in the intestinal tract. Without the J protein, individuals would have impaired immune responses in the gut, leading to frequent infections in the intestinal tract. Choices B, C, and D are incorrect because the J protein deficiency specifically affects the mucosal immune system in the intestinal tract, not the blood, liver, or pancreas.
Question 2 of 5
The nurse is performing morning care for a patient who sustained a fractured pelvis and bilateral femur fractures yesterday in a motorcycle collision. The patient complains of shortness of breath. Assessment reveals audible wheezes and oxygen saturation of 76%. What action should the nurse take first?
Correct Answer: D
Rationale: Step 1: The patient complains of shortness of breath and has audible wheezes, indicating potential respiratory distress. Step 2: Oxygen saturation of 76% is critically low and requires immediate intervention. Step 3: Raising the patient to a high Fowler position helps improve lung expansion and oxygenation. Step 4: This action takes priority to improve the patient's breathing and oxygen saturation levels. Summary: A is incorrect as establishing an IV line is not the immediate priority. B is incorrect as informing the charge nurse delays direct patient care. C is incorrect as addressing the family is secondary to addressing the patient's urgent needs.
Question 3 of 5
T cells can recognize
Correct Answer: B
Rationale: The correct answer is B: The shape of antigens. T cells recognize antigens based on their shape, specifically the conformational structure of the antigen. T cell receptors interact with the surface of antigens, forming a complex based on the shape complementarity. This interaction is crucial for T cell activation and immune response. A: Linear peptides - While T cells can recognize linear peptides presented by MHC molecules, the primary mode of recognition is through the shape of antigens. C: Buried epitopes - T cells typically recognize epitopes displayed on the surface of antigens rather than buried within the structure. D: Soluble antigens - T cells can recognize both soluble and membrane-bound antigens, but the key factor is the shape rather than the solubility of the antigen.
Question 4 of 5
In LN naïve T cells and activated dendritic cells interact in the
Correct Answer: C
Rationale: The correct answer is C: Paracortex. Naïve T cells circulate through the blood and lymphatic system until they encounter antigens presented by activated dendritic cells in the paracortex of lymph nodes. The paracortex is the region where T cell activation and proliferation occur, leading to an immune response. The subcapsular sinus (A) is primarily involved in filtering lymph fluid, the cortex (B) contains B cell follicles, and the medulla (D) contains plasma cells and macrophages. Thus, the paracortex is the specific site of interaction between naïve T cells and activated dendritic cells in lymph nodes.
Question 5 of 5
Which of the following statements concerning Influenza Hemagglutinin (HA) and Neuraminidase (N) is incorrect
Correct Answer: D
Rationale: The correct answer is D. Tamiflu interferes with the function of Neuraminidase (N), not Hemagglutinin (HA). HA binds to sialic acid on cell surface molecules, not N. N's function is to release new viral particles. Both HA and N undergo antigenic drift. Therefore, choice D is incorrect as it misrepresents the mechanism of action of Tamiflu.