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
transitional
ability to stretch, many layers, shape varies
7 soft connective tissues
areolar CT, adipose, reticular CT, elastic CT, dense regular CT, cartilage
areolar CT
papillary (upper) part of dermis
adipose
fat (stored energy), in hypodermis (ADIPOSE IS THE ONLY SOFT CONNECTIVE TISSUE THAT MATURES ITS OWN CELLS, become adipocytes)
reticular CT
in STROMA (walls) of soft tissue organs (squiggles of reticular fiber)
elastic CT
artery walls (looks like multiple waves)
dense regular CT
reticular (lower) layer of dermis (volcano lava)
cartilage
avascular, housed in the “lacunae” (lakes with cells)
3 quick important types of cartilage
fibrocartilage, hyaline, elastic
fibrocartilage
intervertebral discs- very durable
hyaline cartilage
growth plates of bone, nose
elastic cartilage
pinna (external ear)
dense elastic CT
ramen noodles
reticular CT
Squiggle with cells
elastic cartilage
scribble out mistake thing
hyaline cartilage
brain cheese
dense irregular CT
looks like stomach
adipose
blobs
fibrocartilage
lines with cells between
areolar CT
a mess
dense regular CT
so calming