Nokea
A naïve lymphocyte:
- A. Does not yet express antigen receptors
- B. Is not yet considered mature
- C. Has not yet been activated by antigen
- D. Is found only in primary lymphoid tissues
Correct Answer: C
Rationale: Step-by-step rationale:
1. Naïve lymphocytes have antigen receptors but have not been activated by antigen.
2. Activation is necessary for their differentiation into effector cells.
3. Naïve lymphocytes are considered mature as they have completed development.
4. They circulate in secondary lymphoid tissues, not just primary lymphoid tissues.
Summary:
Choice C is correct because naïve lymphocytes have antigen receptors but have not been activated by antigen. Choices A, B, and D are incorrect because naïve lymphocytes do express antigen receptors, are considered mature, and can be found in both primary and secondary lymphoid tissues.
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- B. Helper T cells
- C. Cytotoxic T cells
- D. Natural killer cells
Correct Answer: B
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Which pathway of the complement system involves properdin, Factor B, and Factor D?
- A. Classical pathway
- B. Alternative pathway
- C. Lectin pathway
- D. Terminal pathway
Correct Answer: B
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Vibrations from the sound waves are amplified by
- A. the eardrum
- B. Anvi
- C. Stirrup
- D. All above
Correct Answer: D
Rationale: The correct answer is D: All above. The vibrations from sound waves are amplified by the eardrum, Anvil (also known as the Incus), and Stirrup (also known as the Stapes), which are the three tiny bones in the middle ear. The sound waves travel through the ear canal and hit the eardrum, causing it to vibrate. The vibration is then transmitted through the Anvil to the Stirrup, which amplifies the vibrations and sends them to the inner ear. Each of these three components plays a crucial role in the process of amplifying sound vibrations for better auditory perception. Therefore, all three choices are correct in this context.
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- A. Production of IgM antibodies
- B. Activation of CTL
- C. Recruitment and activation of neutrophils
- D. Production of IgE antibodies
Correct Answer: D
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An allogenic hematopoietic stem cell transplant is considered as treatment for a patient with acute myelogenous leukemia. What information should the nurse include when teaching the patient about this procedure?
- A. There is no risk for graft-versus-host disease because the donated marrow is treated to remove cancer cells
- B. The patient’s bone marrow will be removed,treated stored and then reinfused after intensive chemotherapy
- C. Peripheral stem cells are obtained from a donor who has a human leukocyte antigen (HLA) match with the patient
- D. There is no need for posttransplant protective isolation because the stem cells are infused directly into the blood
Correct Answer: C
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