Parts of the Blood Handout

Parts of the Blood Handout Name ______Page numbers are in ( ).

Where are the two kinds of lymphocytes (B and T cells) made and where do they mature? (824)

Both are made in the bone marrow, but the B cells mature there while the T cells mature in the thymus.

Name three parts of the first line of defense in the immune system and then give an overall description of the goals of the first line of defense. (840-841)

1. skin

2 mucus keep invaders from entering the body

3 hairs

Differentiate between the nonspecific and specific defense mechanisms. (841)

Nonspecific is attacking any antigens it comes across while the specific defense mechanisms like the use of antibodies are targeting a specific antigen.

What is the goal of the following terms in the immune system? You may have to use the other reading and/or the glossary to accurately determine the roles of each of these.

MHC complex (847) class I and class II: Marks our cells as self so they are not attacked Complement system (844): proteins in the plasma that destroy any pathogens they cross Interferons (844): chemical released by virus infected cells to stop other multiplication of viruses. Histamine (843): released by basophils to trigger the inflammation response Interleukins (849): send messages to the help t cells and cytotoxic t cells to go to work Helper T-cells (848): alerts both the humoral and cell mediated defense mechanisms Plasma cells (848): makes the antibodies Cytotoxic T-cells/Killer T-cells (848): kill pathogens in the cell-mediated response Macrophage (848): general attack and phagocytosis of antigens Memory T-cell (848): t cells that are made to prepare in case of second exposure to pathogen Antigen presenting cell (848): cell that takes in antigens and then presents them on its surface to To be recognized by helper t-cells

Study Figure 43.10 that illustrates the humoral and cell-mediated immune responses.