Identify the role of helper T-cell lymphocytes in regulating the activity of the immune system.
A. Helper T-cell lymphocytes are scavenger cells that engulf and digest infectious organisms and foreign substances.
B. The function of helper T-cells is to recognize the foreign antigens presented to them by macrophages and other antigen-presenting cells.
C. Helper T-cell lymphocytes function as antigen-presenting cells.
D. All of these are correct.
Answer: B
You might also like to view...
In which culture is the human body viewed as a complex network of meridians that are pathways for distributing vital energy?
a. Western c. Indian b. Eastern d. European
The nurse knows that urinary tract infection (UTI) is the most common health care–associated infection because
a. Catheterization procedures are performed more frequently than indicated. b. Escherichia coli pathogens are transmitted during surgical or catheterization procedures. c. Perineal care is often neglected by nursing staff. d. Bedpans and urinals are not stored properly and transmit infection.
In educating the caregivers about the administration of Digoxin (Lanoxin) to their child, the nurse instructs the caregivers to:
1. Notify the physician of weight gain of two pounds or more per day. 2. Administer the medication at any set time during the day, every day. 3. Administer the medication two hours before meals and one hour after meals. 4. Hold the Digoxin if the heart rate is <60/minute or >120/minute.
The school nurse in a high school is reviewing the nutritional needs of adolescents. The nurse is aware that in this age group, which of the following statements is true?
a. Girls require less protein. b. Boys require adequate iron. c. Vitamin B needs are decreased. d. Energy and caloric needs are decreased.