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Our Immune System

By: Ryan Suwito
by

Ryan Suwito

on 19 April 2010

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Transcript of Our Immune System

The First Line of Defense: Non Specific Our Immune System
By:Ryan Suwito Skin
Sweat
Oil Glands
Saliva
Tears
Mucous Membranes
Stomach Acids
Enzymes The first line of defense against foreign particle is the Anatomic Response. The Second Line: Internal Nonspecific Defenses Macrophage
Is involved with nonspecific and specific defense
Foundin interstitial fluid
Destroys microorganisms through phagocytosis
Neutrophil
Ingests bacteria by phagocytosis
Releases bleach that kill both the neautrophil and the badteria/invading pathogen Natural Killer Cell
Destroy virus-infected body cells and cancer cells my releasing chemicals
The chemical pokes holes in the infected cell's membrane
But has a "Spash" like chemical which effects normal cells too Mast Cell
Initiates the inflammatory response
Secretes histamine that stimulates blood vessel filation and blood flow to the damaged area
Important for allergic reations
Interferon
Specilized protein produced by cells infected by a virus
Protects other cells from becoming infected
is nonspecific
Effective against a vereity of vuruses The Third Line:Targeted Defense:Immune System Helper T Cell
A type of lymphocte that detects infection
secretes chemicals that initiate specific T cell and B cell Cytotoxic T cell
Detects then destroys body cells that is infected my certain pathogen. B Cell
Specialized to recognize foreign antigen Plasma Cell
An activated B cell that secretes antibodies Memory Cell
Activated B/T cell after exposure to pathogen
Will produce more if the specific pathogen ever invade again Macrophage
Displays the antiens of a pathogen
Actvates T cell that recognizes the antigen Humoral Immunity When the virus is detected by a B Cell,
it creates plasma cells that will produce
to defend using antibodies, then creates
Memory cells for future use Cell Mediated immunity T Cell binds to the virus that
stimulates it to release perforin
that causes the Virus to break open Inflammatory Response Bacteria has passed the first line of defense
Greeted by histamine from mast cells
Histamine causes swelling Phagocytic,Macrophage and neautrophils
"eat" the badteria
Full transcript