Immune System Flashcards
Already ready to fight
Innate
Gets better at fighting over time
Adaptive
Skin better at keeping pathogens out
Innate defenses
Macrorgansims takes up space on skin by pathogenic flora
Innate defenses
Getting rid of it Hurts us
Microbiome
Present in wet entries to our body
Mucosa
Still have a layer of epidermis that acts as a physical wall
Additional specialized defenses
Digest pathogen on food
Avoid of stomach acid
Degrade pathogenic cells
Digestive enzymes
Forms a sticky trap for microorganisms in our lungs and digestive tract
Mucin
Second line of innate defenses guards against pathogens that enter deeper tissue
Primary static defenses
Phagocytosis
Macrophages
Neutrophil
Dendritic cell
After ingesting the offending pathogen
Phagosome
Containing cuasic enzymes bind with the vesicle containing the pathogen forming a phagonlusome
Lysosome
Blocking the lysosome
Mycobacterium tuberculosis
Waiting in tissue like skin and the digestive tract to ingest and destroy invaders
Macrophages
Call for backup from neutrophils in the blood
Cytokines
Degranulate release toxic granules on and around the pathogen
Neutrophils phagocytosis
Non specific methods
Damage other tissue
Present in surface tissue and can phagocytose
Dendritic cells
Best at antigen presentation through their
MHC-2
Involved in inflammatory response
Innate defense
Mast cells have bags of
Histamines
Very similar to mast cells
Basophils
Injured cells release chemical signal
Pro inflammatory cytokines
Release histamine
Mast cells
Histamine encourages
Vasodilation
Increase vascular permeability
Histamine