lymphatic system pt 2 - unit 3

Question 1

3 lymphocyte cells

Answer 1

b, Tc, and Th

Question 2

mature lymphocyte cells. undergo selection in bone marrow. involved in antibody and medicated immunity.

Answer 2

B cells

Question 3

mature lymphocyte cells. undergo selection in thymus. “CD8+ cells.” give rise to cell medicated immunity

Answer 3

cytotoxic t cells

Question 4

mature lymphocyte cells. undergo selection in thymus. “CD4+ cells.” help activate B and Tc. involved in antibody and cell medicated immunity.

Answer 4

Helper T cells

Question 5

lymphocyte selection

Answer 5

occurs in bone marrow and thymus when a fetus/baby. we have trillions as a baby but several are killed off as antigen receptor binds to body’s natural molecules. those that don’t stay as antigens.

Question 6

major histocomatability complex.

Answer 6

how molecules are displayed to lymphocytes.

Question 7

MHC type. made by B cells and macrophages. link engulfed molecules onto MHC2 proteins and display them on cell surface as MHC2 Completes.

Answer 7

Type 2

Question 8

T_ can bind to MHC2 via antigen receptors

Answer 8

Helper

Question 9

MHC type. Made by all other body cells. they constantly link MHC1 proteins with molecules within themselves then placed on cell surface as MHC1 Completes.

Answer 9

Type 1

Question 10

T_ bind to MHC1 via antigen receptor

Answer 10

Cytotoxic

Question 11

Two types of acquired immunity

Answer 11

cell-medicated and antibody medicated.

Question 12

immunity activated by naive T cells and carried out by Tc cells. carried against infected cells

Answer 12

Cell-medicated immunity

Question 13

immunity activated by Th and carried out by B cells. carried against extracellular antigens.

Answer 13

antibody-medicated immunity

Question 14

antibodies are

Answer 14

4 shaped proteins released by activated B cells that bind to a specific antigen that initially activated the B cell and travel through extracellular fluid.

Question 15

memory cells

Answer 15

Th, Tc, and B cell clones that remain in body after an infection clears

Question 16

immunological memory

Answer 16

aka what memory cells do

Question 17

passive immunity

Answer 17

antibodies are introduced to the body (usually as a baby)

Question 18

active immunity

Answer 18

acquired immunity triggered by natural exposure to antigens or vaccination

Question 19

Vaccines

Answer 19

trigger acquired immunity thus develop immunological memory

Question 20

HIV

Answer 20

human immune deficiency virus. virus that kills Th and macrophages.

Question 21

AIDS

Answer 21

extremely low levels of Th in body due to HIV.