Chapter 14: Lymphatic and Immune Flashcards
lymph
clear, watery fluid surrounding body cells and flowing into system of vessels
-originate from blood (filtered from capillaries)
WBC
white blood cells
- lymphocyte
- monocytes
interstitial fluid
fluid surrounds body cells and passes into lymph capillaries
Lymphocyte and monocyte
originate in bone marrow, lymph nodes, and spleen/thymus.
spleen function
- macrophages destroy old erythrocytes (RBC)
- filters microorganisms and other foreign material from blood
- activated lymphocytes
- stores blood
thymus function
- protects self from disease (immunity)
- makes antibodies; produces immune cells that fight forcing antigens such as bacteria and viruses.
natural immunity
- resistance at birth
- no prior exposure to antigen
- neutrophils, monocytes, macrophages, and NK cells
- no immunological memory
adaptive immunity
- lymphocytes: T and B cells
- antibodies produced after exposure to antigen
- memory: second exposure elicits faster and larger response
- vaccination
- antitoxins
- immunoglobulins
- maternal antibodies
adenoids
mass of lymphatic tissue in nasopharynx
antibody
protein produced by B cells. destroy antigens
antigen
substance that the body recognizes as foreign
T cell
lymphocyte that acts directly on an antigen
B cell
lymphocyte that matures into a plasma cell to secrete antibodies
immunotherapy
the use of B cells and T cells to treat conditions such as cancer.
monoclonal antibodies (MoAb)
created in a lab by cloning techniques. they attack specific cancer cells.
- MoAb therapy and transplants are passive immunotherapy