Tissues Flashcards
- single layer of flat cells
- substances can pass through easily
- line blood vessels
- line lymphatic vessels
- line air sacs
simple squamous
-single layer of cube shaped cells
- line kidney tubules
- cover ovaries
- line ducts of some glands
simple cuboidal
-single layer of elongated cells
- nucleus near basement (so is membrane)
- sometimes have cilia and microvilli
- line uterus, stomach, and intestines
simple columnar
-single layer of elongated cells
- nuclei at two or more levels
- often have cilia and goblet cells (secretor of mucus)
- line respiratory passages (trachea)
Pseudostratified columnar
-many cell layers
- top cells are flat
- can accumulate keratin
- outer layer of skin
- lines oral cavity, vagina, and anal canal
stratified squamous
-many cell layers
- cube shaped and elongated cells
- line urinary bladder, uterus, and part of the urethra
transitional
composed of cells that are specialized to produce and secrete substances
glandular epithelium
are ductless
endocrine glands
contain ducts
exocrine glands
example of unicellular exocrine gland (composed of one cell)
goblet cell
examples of multicellular exocrine gland (composed of many cells)
sweat glands, salivary glands, etc
fluid product, salivary glands, pancreas gland, sweat gland
merocrine glands
cellular product, portions of cells, mammary glands, ceruminous glands
apocrine glands
secretory products, whole cells, sebaceous glands (oil)
holocrine glands
fixed cell, produce fibers, most common cell, large star shaped
fibroblast