Tissues, Glands and Membranes

29 terms by 4n0n1m0u5 

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epithelium

covers internal and external surfaces

free surface

is not in contact with other cells

basement membrane

attaches the epithelial cells to underlying tissues

Simple

single layer

Stratified

2 or more layers

squamous

flat

cudoidal

cube-like

columnar

tall and thin

simple squamous

normally found in the lung alveoli

simple cuboidal

normally found in the kidney

simple columnar

normally found in the stomach and intestine lining

pseudostratified columnar

normally found in the trachea and bronchi

stratified squamous

normally found in the skin, mouth cornea and esophagus

transitional

normally found in the bladder, urethra, ureter

tight junctions

bind adjacent cells together and form permeability barriers

desmosomes

link that function to bind cell together

hemidesmosomes

anchor cells to the basement membrane

gap junctions

small channels that allow adjacent cells to exchange small molecules

gland

multicellular structure that secretes substances onto a surface, cavity or in the blood

exocrine

glands with ducts

connective tissue

extracellular materials that separate cells from one another

collagen fibers

microscopic ropes that are flexible but can resist stretching

reticular fibers

very fine short collagen fibers

blast

germ

clast

break

ground substance

shapeless background of the collagen fibers in a microscope

macrophages

large cells that are capable of moving about and ingesing foreign substances

mast cells

release chemicals that promote inflammation

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