Immunity

the ability to ward off disease through body defenses

Lack of Immunity is called

Susceptibility

Innate immunity refers to

all body defenses that protect the body against any kind of pathogen.

Adaptive immunity refers to

to defenses (antibodies) against a specific  micororganism

The bodies first line of defense against infections is

is a physical barrier and non specific chemicals of the skin and mucous membranes

protects the eyes from irritating substances and microorganisms

Saliva

washes microorganisms from teeth and gums

Mucus

traps many microorganisms that enter the respiratiory and gastrointestinal tracts.

the ciliary escalator

moves mucus up and out of the lower respiratory tract

tears, saliva, nasal secretions and perspiration 

Blood consists of

plasma (fluid) and formed elements (cells and cell fragments)

Leokocytes (white blood cells) are divided into 

granulytes and agranulytes

Granulytes are

neutrophils

(phagocytic active during infection)

Basophils

(histamine)

eosinophils

(produce toxic proteins against parasites)

Agranulocytes

Monocytes (mature to macrophages)

dendritic cells

lymphocytes