20s When a kidney transplant is rejected it often involves cell- population invo

Question

20s When a kidney transplant is rejected it often involves cell- population involved in this process is primarily: cell-mediated immunity. The cell a. monocytes b. plasma cells c. Tlymphocytes d. B lymphocytes 22. Cytolytic T cells are designed to protect against: a. skin bacteria b. some forms of cancer exotoxins in the blood c. d. viral infection e. both b and d 23. Lymphoid tissue includes any of the following EXCEPT a. vermiform appendix b. Peyer's patches c. red pulp of the spleen d. Lymph nodes 24. A microglial cell most closely resembles a: a. monoeyte b. mast cell c. lymphocyte d. neutrophil 25. In Henoch-Schonline purpura, IgA forms complexes which precipitate and cause vasculitis with fibrinoid necrosis in the skin and kidneys. This is an example of: a. Type I hypersensitivity b. Type II hypersensitivity c. Type III hypersensitivity d. Type IV hypersensitivity 26. Which of the following is NOT an alter name for the CD8+ T cell? a. killer T lymphocyte b. cytotoxic T cell c. cytolytic T cell d. regulatory T cell 27. Which of the following belongs to innate immunity? a. IgA b. neutrophil c. B lymphocyte d. helper T cell

Explanation / Answer

Answer21

T lymphocytes

Because T-cell responses to the highly polymorphic MHC molecules almost always trigger a response against the grafted organ.

Answer 22

Both b & d

Because it produce Perforin, which makes holes in cell membrane of infected cells

Answer 23

Red pulp of the spleen

Because red pulp is composed of connective tissue

Answer 24

Mast cells

Found in connective tissue

Answer25

Type III hypersensitivity

Because there are excess of antigen

Answer 26

Regulatory t cell because its alter name is CD8+CD28

Answer 27

Helper t cell

Because it plays an important role in adaptive immunity

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