Nokea
The transfer of tissue between genetically identical individual (twins) is a(n) ___
Correct Answer: isograft
Rationale: An isograft is the transfer of tissue between genetically identical individual (twins).
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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.
The nurse stresses that when a person produces his own antibodies against a specific antigen, that process of immunity is ___ immunity
Correct Answer: active acquired
Rationale: When a person?s immune system produces specific antibodies against an antigen, that process is an active acquired immunity.
Which advice will the nurse provide for a 94-year-old patient with deteriorated cell-mediated immunity?
- A. Avoiding the influenza vaccine
- B. Getting pneumonia vaccine
- C. Having skin tests for all antigens
- D. Taking large doses of β-carotene
Correct Answer: B
Rationale: As the older adult loses some of the cell-mediated immunity, especially against pneumonia and influenza, it is recommended that they acquire the immunization.
Which line of defense provides the body with innate immunity?
- A. Skin and mucous membranes
- B. Lungs
- C. Heart
- D. Tears and saliva
- E. Natural intestinal and vaginal flora
- F. Stomach acid
Correct Answer: A,D,E,F
Rationale: The innate immune system is composed of the skin and mucous membranes, cilia, stomach acid, tears, saliva, sebaceous glands, and secretions and flora of the intestine and vagina. These organs, tissues, and secretions provide biochemical and physical barriers to disease.
Which is humoral immunity based on?
- A. Production of antibodies by B cells
- B. T cells are activated by an antigen
- C. The body's response to an antigen
- D. Sensitized T cells destroy the antigen
- E. Helper T cells activate phagocytosis
Correct Answer: A,C,E
Rationale: Both types of immunity are in response to an antigen, In the humoral response, helper T cells activate phagocytosis and the production of antibodies by the B cells. B cells are the main player in humoral response.