Open Question
How does a cytotoxic T cell destroy another cell displaying antigens bound to class I MHC proteins?
21. The Immune System
Introduction to T Lymphocytes
Back21. The Immune System
Introduction to T Lymphocytes
- Open QuestionAlthough the adaptive immune system has two arms, it has been said, 'no T cells, no immunity.' Explain.
- Multiple ChoiceToll-like receptors are found on __________.
- Multiple Choice
A naive lymphocyte:
- Open Question
Mr. White developed neutropenia as a consequence of cancer chemotherapy, which destroyed much of his bone marrow. What other components of the immune system would be harmed by bone marrow destruction? Would you expect his hematocrit to be elevated or decreased? What effects would you expect to see from this change in hematocrit? (Connects to Chapter 19)
- Multiple Choice__________ is the property of lymphocytes that prevents them from attacking the body's own cells.
- Open QuestionBlocking the antigen receptors on the surface of lymphocytes would interfere with (a) phagocytosis of the antigen, (b) that lymphocyte's ability to produce antibodies, (c) antigen recognition, (d) the ability of the lymphocyte to present antigen, (e) opsonization of the antigen.
- Open QuestionDifferentiate between humoral and cellular adaptive immunity.
- Open Question
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
b. The immune response to a viral infection involves NK cells and different kinds of lymphocytes.
- Open QuestionCD4 markers are associated with (a) cytotoxic T cells, (b) regulatory T cells, (c) helper T cells, (d) all of these.
- Multiple ChoiceSelf-reactive B cells are eliminated in the __________.
- Multiple Choice
What is the importance of the variable region of T-cell receptors?
- Open Question
Type I hypersensitivity is due to release of inflammatory mediators from_____, and type IV hypersensitivity is due to the actions of_____.
a. TH cells; macrophages
b. neutrophils; TH cells
c. B cells; TC cells
d. mast cells; TH cells
- Multiple ChoiceWhich type of disease results from the inability of the immune system to distinguish self- from nonself-antigens?
- Open QuestionLymphocytes that develop immunocompetence in the bone marrow area. T lymphocytes,b. B lymphocytes,c. NK cells,d. B and T lymphocytes.