A patient is exposed to a viral infection. What role will interferon most likely play during this exposure?
A) It will stimulate B-lymphocyte activity.
B) It will interfere with stem cell multiplication.
C) It will stimulate growth of lymphoid cells.
D) It will interfere with virus replication.
D
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Interferons interfere with the ability of viruses in infected cells to replicate and spread to uninfected cells. Interferons will not stimulate B-lymphocyte activity, stem cell multiplication, or growth of lymphoid cells.
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Which of the following statements regarding thyroid disorders is true?
A. The presence of a "goiter" always indicates hypothyroidism. B. The effects of thyroid dysfunction are found in all body tissues and organs. C. The hormones synthesized by the thyroid gland are not essential for life. D. The effects of hypothyroidism are less serious than those of hyperthyroidism.
A nurse inspecting a patient's pressure ulcer documents the following: full-thickness tissue loss; visible subcutaneous fat; bone, tendon, and muscle are not exposed. This pressure ulcer is categorized to be at which of the following stages?
A) Stage I B) Stage II C) Stage III D) Stage IV
How many basic levels of sedation have been identified?
a. 3 b. 4 c. 5 d. 8
The nurse is asked to explain the relationship between the nervous system and substance abuse and addiction. Which information should the nurse include in response? (Select all that apply.)
1. Changes in neuroanatomy cause the behavior seen in addiction. 2. Addictive substances act on the mesolimbic system of the brain. 3. Addictive substances stimulate surges of dopamine. 4. Addictive substances act on the mesocerebral system of the brain. 5. Changes in neurochemistry cause behaviors seen in addiction.