Select the true statement about the mechanism of action of a natural killer cell.
A. Granzymes from the natural killer cell enter the perforin hole and degrade the enemy cell enzymes.
B. The enemy cell dies by apoptosis, and the macrophage engulfs and digests the dying cell.
C. The natural killer cell releases perforins that form a hole in the enemy cell membrane.
D. All of these are correct.
Answer: D
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Complete the following ECG criteria for a sinus bradycardia:
Rhythm ________________________________________ Rate ________________________________________ P waves ________________________________________ PR interval ________________________________________ QRS duration ________________________________________ Fill in the blanks with correct word
A patient who is of Filipino descent is admitted to the hospital. The nurse goes to the room to start intravenous fluids and to perform an admission assessment and finds several family members in the room
Which action by the nurse is appropriate? a. Ask the family to wait in the hallway until the admission tasks are completed. b. Determine which family member is the family patriarch and address questions to him. c. Invite family members to assist with appropriate tasks during the admission process. d. Provide chairs for family members and ask them to stay seated during the admission.
The condition of the immune system affects how a person reacts to microorganisms in the environment.
Answer the following statement true (T) or false (F)
A 5-year-old boy is admitted for surgery to have his tonsils removed. Which of the following does the nurse plan to do, based on her knowledge about children of this age?
a. Allow the child to take responsibility for his own preoperative hygienic care. b. Leave the child alone to relax before the procedure. c. Allow the child to handle and look at the equipment when the nurse takes his blood pressure. d. Provide magazines and puzzles for diversion.