| Term | Definition |
|
cellularity |
cells closely bound to each other by cell junctions making a wide sheet |
|
columnar epithelium |
tall, thin cells; taller than is wide; grouped by nonciliated & ciliated |
|
endocrine gland |
cells that secrete hormones directly into the bloodstream |
|
epithelial tissue |
sheets of cells covering exposed surfaces, line body cavities, ducts, vessels |
|
glandular epithelium |
made up of cells that produce secretions classified as endocrine or exocrine; number of gland cells & nature of secretion; example is columnar epithelium with goblet cells |
|
keratinised stratified squamous |
kept moist by keratin; found in skin, tongue & external portion of lips |
|
mucous glands |
most are multicellular with exception to unicellular goblet cells |
|
multicellular glands |
have many cells that may form a secretory sheet of epithelium in the linings of stomach & uterus |
|
non-keratinized stratified squamous epithelium |
must be kept moist by bodily secretions to prevent drying out; found in cornea, oral cavity, vagina, rectum, esophogus |
|
pseudostratified |
1 cell layer but appears to be multiple due to irregular shape |
|
serous glands |
cell type that produce a thin, watery protein rich secretion; found in all cavity linings of pericardial, pleural & pericardial |
|
simple columnar epithelium |
high volume secretion; found in digestive tube; makes exocrine glands |
|
simple cuboidal epithelium |
fx: ion pumping; absorption, secretion, protection; found in ovaries, thyroid gland, kidney tubules; |
|
simple squamous |
found in alveoli of lungs; lining of blood vessels (endothelium); lines body cavities' is osmosis & diffusion |
|
squamous shape |
flat, irregular-shaped cells |
|
stratified columnar epithelium |
rare epithelium found in large duct of salivary gland; found in between stratified squamous and pseudostratified |
|
stratified cuboidal epithelium |
found in sweat & salivary glands |
|
stratified layer |
2 or more cell layers, only the deepest layer touches the basement membrane |
|
stratified squamous |
top layer is flat but other layers may not be; can be keratinized or not; covers surfaces needing protection; cells bound tightly together |
|
unicellular glands |
type of gland; example: mucus secreting goblet cells; found in epithelium of respiratory & intestinal tract |