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Epithelium - Coggle Diagram
Epithelium
surface epithelium
sheet(s) of cells covering internal or external surfaces
simple epithelium
types
simple cuboidal
locations
secretory (pancreas)
collecting and other tubules of the kidneys
portions of the respiratory systems
surfaces of lens and iris
surface of ovary
pigmented epithelium of retina
transition b/w seminiferous T and retete testis
simple columnar
secretory and absorptive capabilites
locations
glandular stomach
intestine
gall bladder
lining of some secretory ducts
uterus and uterine horns
some mid-respiratory areas
simple squamous
endothelium
mesothelium
locations
heart
linings of coelmic cavity
lining of vessels
alveolus
small ducts of glands
Bowman's capsule of kidney
lining of inner ear labyrinth
rete testis
easy diffusion
single layer of cells
pseudostratified epithelium
types
transitional
urinary tract only
cell size/appearance depend on distention
pseudostratified columnar
upper respiratory (trachea)
epididymis
all cells contact basement membrane, +/- reach free surface
reproductive and respiratory tracts
often ciliated
stratified epithelium
two or more layers
keratinized (dry/cornified)
surface epidermis
buccal cavity
anal region
ruminant forestomach
non-keratinized (wet)
esophagus
lips
oral cavity
nasal vestibular region
cornea and conjunctiva
distal male repro
sensory epithelium
retina
internal ear
olfactory mucosa
taste buds
characteristics
avascular
polarized
apical surface contacts external environment
basal surface contacts basement membrane/basal lamina
functions
protection
secretion
exocrine glands
reproduction
testes
excretion
kidney tubules
sensation
retina
taste buds
transport
trachea
glandular epithelium
