Immunity = All the mechanism the body uses to protect the body

from foreign agents

Innate = Protection you are born with

Acquired = Protection develop after birth

Hypersensitivity = Over-reacts

Autoimmunity = Attack normal cells

1. Physical Barriers

Skin

Mucous Membrane

Respiratory systemDigestive system

2. Cells

Macrophages

3. Chemicals

pHCl H

Enzymes

4. Fever

Kill germs with heat before body dies

T Lymphocyte Cells - Kill specific germs

Acquired Immunity - Cells

B Lymphocyte Cells - Make antibodies

Macrophages - Kill cells marked as bad

Acquired Immunity - Organs

Bone Marrow - Produces all blood cells- Matures B

Lymphocytes

Acquired Immunity - Organs

Thymus - Matures T Lymphocytes90-95% of all cells killed