Ch. 14 Flashcards
(26 cards)
Adaptive immunities
Not born with- developed/acquired
Agranulocytes
Lymphocytes
Monocytes
Antibodies
Recognize epitopes on antigens
Cell-mediated immunity
T cells
Chemokines
Cytokines that stimulate and movement and migration of WBCs- chemotactic factors
Cytokines
Chemicals from WBCs and tissue cells that regulate development, inflammation, and immunity
Defensins
Peptides from cells that damage membranes, lyse bacteria/fungi
in tears and saliva
Granulocytes
Neutrophils
Eosinophils
Basophils
GALT
Gut-Associated Lymphoid Tissues
lymphoid nodules in gastrointestinal tissues- subcategory of MALT
Peyer’s Patches in intestines
Hematopoiesis
Production of blood cells
AKA Hemopoiesis
Inflammation stages
- Injury: vasoconstriction, blood clots, Mast cells release chemokines and cytokines
- Vascular: nearby vasodilation, increased leakage of fluids and WBCs to area
- Edema and Pus: fluid collection, edema, Neutrophils
- Resolution/Scar: Macrophages, Lymphocytes, Fibroblasts
Interferon
Anti-Viral Response
Produced by WBCs and tissues in response to viruses
Alpha: From lymphocytes/macrophages
Beta: From fibroblasts and epithelial cells
Gamma: From T cells
Lysozyme
In granulocytes: digestive enzymes
Membrane Attack Complex
C5b: builds a MAC out of C9 to punch hole thru cell membrane
Mononuclear Phagocyte System
Reticular fiber system: connective tissue passageway between tissues and organs
Contains macrophages
Humoral immunity
B cells
Hydrolytic
digestive enzymes
MALT
Mucosal-Associated Lymphoid Tissue
All mucous membranes, including respiratory
PAMPS
Pathogen-Associated Molecular Patterns
nonspecific defense recognized by PRRs
Peptidoglycan-cell wall
LPS-outer membrane
Bacterial flagella
PRRs
Pattern Recognition Receptors
nonspecific innate defense
recognize PAMPs- general non-self features
Toll-Like Receptors
Receptors on macrophages that bind to PAMPs for phagocytosis
Phagocytosis Steps
- TLR binds to PAMP and triggers englufment
- Pseudopods enclose antigen into phagosome
- Lysosome fuses to form a Phagolososome
- Elimination/digestion via chemicals
Primary lymphoid organs
Origin of lymphocytes
Thymus Gland
Bone Marrow
Pus
Neutrophils and fluid collection during inflammation