Lab Quiz Two Flashcards
tight junctions
“fuse adjacent cells with a web-like strip of protein” (common between epithelial cells like skin, stomach, keep cells close and liquid out)
desmosomes
junction links adjacent cells with transmembrane glycoproteins
desmosomes
little bit loose junction
gap junctions
protein tunnels made of CONNEXONS, allow material to pass between cells (ex- cardiac cells)
basement membrane
glue cell to connective tissue, “non-living layer located deep to epithelial cells and superficial to connective tissue layer”
squamous
“fried egg” shaped
cuboidal
ice cube shaped
columnar
rectangles/ovals shaped
simple squamous examples
alveoli of lungs, blood vessels
simple cuboidal examples
line ducts of most gands
simple columnar examples
- ciliated- line fallopian tubes (STD’s destroy these)
- non-ciliated- microvilli, line small intestine
pseudostratified
ALWAYS columnar, ciliated, have goblet cells (mucus), line upper respiratory tract
stratified squamous examples
epidermis
stratified squamous
many layers, rounder as you go deeper
transitional examples
lines urinary bladder