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30 Cards in this Set

  • Front
  • Back
tissues are
collections of structurally similar cells C related functions, with extracellular (nonliving) material
etymology of tissue
french: to weave
4 basic types of tissue
epithelium, connective tissue, muscle tissue, nervous tissue
epithelia main functions
cover & protect, sensory reception, secretion, absorption, filter, transport
connective tissue main function is to
muscle tissue's main function is to
nervous tissue's main function is to
epithelia are
sheets of cells that cover body surfaces and line body cavities
where does epithelium occur
at the interfacees between different environments
epithelia: relationship between cells and extracellular material
minimal extracellular material
what is/are beneath epithelial sheets
basement membrane, then connective tissue
epithelia: bv's and nerves
avascular but innervated
epithelia and regeneration
high regen capacity r/t friction, and hostile environment.
classification of epithelia by cell layers:
simple (1)
stratified (2+)
classification of epithelia by cell shape
squamous - platelike
cuboidal - cube
columnal - column
all with conforming nuclei
what's the function of simple squamous
1) diffuse
2) filter
3) secrete if serous membranes
doesn't protect!
what's the function of stratified epithelia (all shapes)
protect underlying connective tissue where abrasion is common
cuboidal and columnar are rare
what's the function of simple cuboidal and columnar
if ciliated, propel stuff
how are stratified epithelia named?
by cells in apical layer
where is simple squamous found
capillaries, alveoli
2 examples of serous simple squamous and where they're found
endothelium - heart, bv's lymphatic vessels

mesothelium - line peritoneal, leural, pericardial cavities, covers viscera
where is simple cuboidal found
ducts of glands, kidney tubules, ovary surface
where is simple columnar found?
lines digestive tube from stomach to anal canal, gallbladder
etymology of cilia
what kind of epithelial cells line the uterine tube (think: propel ovum)
simple ciliated columnar
which type of epithelium contain goblet cells
what is pseudostratified columnar epithelium
single layer, all cells attach to basement membrane, different heights, and appear stratified
where are pseudostratified columnar epithelia found
ciliated: interior of respiratory tubes (propel mucus)
nonciliated: sperm carrying ducts
what is stratified squamous epithelium
apical layer squamous, deeper layers are cuboidal or columnar. thickest, provides the most protection
where is stratified squamous epithelia located
covers skin and extends into every orifice that is continuous with the skin