epithelial tissue

tissue that covers the surfaces of the body and organs

connective tissue

matrix, supports and binds tissues

muscle tissue

(elongated cells), contraction

nervous tissue

tissue that carries electrical messages

>1 cell thick

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1 cell thick 

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1 cell thick, looks otherwise

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What is "PPEAMSS"?

What does it stand for

Acronym for epithelial functions

Protect (skin, against bacterial invasion)—against abrasion, dehydration, chemical and biological agents

Permeability

Excretion (glands)

Absorb (intestine)

Movement (of respiratory mucus, transport substances, egg, stretching of urinary system)

Secretion (glands, GI tract)

Sensory reception (taste buds, olfactory) 

ductless glands, secrete hormones

ducts, secrete sweat and oils

Four main epithelial cells

squamous, cuboidal, columnar, transitional 

simple squamous cell function

stratified squamous cell function

simple and stratified cuboidal cell function

secretion, transport or filtration

simple columnar cell function

absorption or secretion

stratified columnar cell function 

protection and secretion

pseudostratified columnar cell function

transitional cell function

expand and contracts/ change shape

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