A nurse is teaching a group of nursing students about antibodies. The nurse correctly explains that which type of response is triggered when antigens bind to antibodies on mast cells or baso-phils?
a. Acquired immune response
b. Autoimmune response
c. Hypersensitivity reaction
d. Transplant rejection
C
When antigens bind to antibodies on mast cells and basophils, chemical mediators of hypersensi-tivity reactions are released. Although hypersensitivity is an acquired response, mast cells and basophils do not play a role in other acquired responses. An autoimmune response occurs when the immune system fails to discriminate between self and nonself. Transplant rejection occurs when the MHC molecules of the donor are different from those of the patient.
You might also like to view...
Parents who treat their children's cold and flu symptoms at home should be educated concerning the reading and understanding of over-the-counter (OTC) labels. Why is this statement true?
A) Many of these preparations contain the same active ingredients so that inadvertent overdose is a common problem. B) Each product is best used for alleviating a particular symptom. C) Some of these products do not contain any drugs. D) Some of these products could interfere with breast-feeding.
One of the Bradford-Hill criteria for causality is randomization
A) True B) False
A grieving client tells the nurse "It has been 8 months since my husband died. I thought I would be
feeling better by this time, but lately I have felt worse. I have no energy. I feel lonely, but I do not want to be around people. What should I do?" The best counsel would be to a. attend a bereavement group. b. become active in a church. c. seek psychotherapy. d. understand this is normal.
The nurse determines that the patient needs further instruction regarding Kegel exercises when the patient tells the nurse that one of the benefits of the exercises is
A) More frequent orgasms B) Rapid postpartum recovery C) Increased vaginal lubrication D) Relief of constipation.