Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Line of Defense
Bio205 Unit 3 (PC)
| Term | Definition |
|---|---|
| Skin (Epidermis) | 1st Physical - Blocks entry of microbe |
| Mucus | 1st Physical - Sticky secretion that traps microbes |
| Saliva (Lysozyme) | 1st Chemical - Enzyme that breaks down bacterial cell wall |
| Resident microbes | 1st Physical/ Chemical - Physically blocks attachment and chemically beneficial microbe that compete with pathogen |
| Mucous membranes (epithelial cells) | 1st Physical - Traps/ blocks entry |
| Sebum (oil) | 1st Physical/ Chemical - Physically flushes out and chemically fatty acids in oil lower Ph |
| Cilia | 1st Physical - sweeps away microbes trapped in mucus |
| Sweat (salt) | 1st Physical/ Chemical - Physically flushes out and chemically discourages microbial growth (salt sucks) |
| Interferon (IFN) (virally) | 1st Chemical from infected cells and 2nd macrophages - Signals neighboring cells to resist viral infections |
| Eosinophils | 2nd Non-specific immune cell - Involved in parasitic infections and some allergic responses |
| Complement | 2nd Non-specific chemical - C3b (opsonization), C3a+5a (phagocytosis- attracts immune cells and inflammation), C5-9 (Membrane Attack Complex) |
| Fever | 2nd Non-specific process - Raises body temperature to inhibit pathogen growth |
| Macrophages (APC) | 2nd Non-specific Immune cell - Engulfs microbes and presents antigens to T cells |
| Inflammation | 2nd Non-specific process - Recruits immune cells and increases vascular permeability |
| IL-1 | 2nd chemical - Cytokine that induces fever and inflammation |
| Phagocytosis | 2nd Non-specific process - Engulfing and digesting microbes |
| Neutrophils | 2nd Non-specific Immune cell - rapidly phagocytoses bacteria |
| Basophils (in blood) | 2nd Non-specific Immune cell -Releases histamine during allergic responses |
| MHC II | 2nd-3rd - Displays foreign antigens to helper T cells |
| Plasma B cells | 3rd specific cell - Produces antibodies specific to antigens |
| Th1 CD4+ T cells | 3rd specific cell - Activates memory T cells and Cytotoxic CD8+ T cells |
| IgE | 3rd Specific chemical - Causes allergic reactions and defends against parasites |
| Memory B cells | 3rd Specific cell - Remembers microbe |
| IgG | 3rd Specific chemical - Provides long-term immunity, can cross placenta |
| Th2 CD4+ T cells | 3rd Specific cell - Activates memory B cells and plasma B cells |
| IgA | 3rd Specific chemical - Antibody found in mucosal secretion (Provides passive immunity to infant's via breast milk) |
| CD8+ cytotoxic T cells | 3rd Specific cell - Kills infected cells via perforins and granzymes (virus, cancer, transplant) |
| Antibodies | 3rd Specific chemical - Proteins that bind to antigens (neutralizes, opsonizes, etc) |
| IgM | 3rd Specific chemical - main first responder (large) |
| Suppressor T cells | 3rd Immune cell - Regulate and suppress immune responses |
| MHC I | 3rd Displays self/cancerous antigens to CD8+ T cells |
Created by:
Andreuh