Nokea
Which substance is released by the T cells that stimulates the lymphocytes to attack an inflammation?
- A. Lymphokine
- B. Epinephrine
- C. B cells
- D. Histamine
Correct Answer: A
Rationale: Lymphokines help attract macrophages to the site of the inflammation.
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The nurse recommends to the busy parent of three young children that the antihistamine fexofenadine would be more beneficial than diphenhydramine because fexofenadine has which quality?
- A. is inexpensive.
- B. contains a stimulant for an energy boost.
- C. does not dry out the mucous membranes.
- D. does not induce drowsiness.
Correct Answer: D
Rationale: Allegra does not induce drowsiness as does Benadryl.
The nurse outlines the functions of the immune system as those actions which have which function?
- A. prevent hemorrhage.
- B. protect the body's internal environment.
- C. maintain the hemoglobin level.
- D. maintain the homeostasis by removing damaged cells.
- E. prevent dangerous blood clots from forming.
Correct Answer: B,D
Rationale: The three main functions of the immune system are to protect the body's internal environment by destroying antigens and pathogens, and maintenance of homeostasis by removing damaged cell.
What is B-cell proliferation dependent on?
- A. Presence of NK (natural killer) cells
- B. Complement system
- C. Antigen stimulation
- D. Lymphokines
Correct Answer: C
Rationale: Antigen stimulation is the sole focus of B-cell proliferation.
The nurse takes into consideration that when the antigen and antibody react, the complement system is activated. This results in which activity?
- A. toughens the cell wall.
- B. generates more T cells.
- C. attracts phagocytes.
- D. makes the antigen resistant.
Correct Answer: C
Rationale: The complement system is a group of plasma proteins that are dormant until there is an antigen-antibody interaction. The proteins destroy the cell membrane and attract phagocytes.
A patient is undergoing immunotherapy on a perennial basis. With this form of treatment, the patient receives treatment scheduled in which way?
- A. Larger doses each week
- B. Higher concentrations each week
- C. Increased amounts and concentrations
- D. The same amount and concentration each visit
Correct Answer: C
Rationale: Perennial therapy is most widely accepted, because it allows for a higher cumulative dose, which produces a better effect. Perennial therapy begins with a diluted dose of the allergen that is increased progressively each week.