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A&P I : chapter 4
Term | Definition |
---|---|
epithelia | lines inside, covers outside |
functions of epithelial tissue & characteristics... | provide protection controls permeability provide sensation produces specialized secretions (Glandular Epithelium) |
cellularity | cell junctions |
polarity | apical and basolateral surfaces top and bottom |
attachment | basement membrane |
avascularity | no blood supply |
regeneration | cells divide to replace those lost or damaged |
cell junctions | tight junc , waterproof gap junc, opening between two cells so they can communicate and exchange desmosomes, makes sure cell is firmly attached - strongpoint |
connexon | tunnel in a gap junction how heart cells communicate w one another |
lumen ! | technically still out of your body because its an empty tube that can always come out |
exocrine | comes out of body , even if it goes into lumen all use ducts ! |
endocrine | IN the body release hormones that enter bloodstream |
mero | watery like sweat |
apo | mother's milk & smelly sweat |
holo | whole cell = oil |
blast | builders young ones |
cyte | adults maintain environment |
clasts | breakers |
fibroblasts: | reticular = stroma, net collagen = strongest, thickest elasting = stretchs, thin |
2 types of adipose tissue: | white fat - most common, stores as fat, absorbs shocks and insulates brown fat - many mitochondria, breakdowns lipids releases energy and warms body, found in infants, young children and hibernating bears |
dense regular | tendon, organized, one direction |
dense irregular | disorganized |
Fascia | work your way from the outside to the inside connective tissue layers and wrappings that support or surround organs 1- superficial fascia, separates skin from underlying tissues 2- deep fascia, sheets of dense regular connective tissue 3- |
lymph | forms interstatial fluid that enders lymphatic vessels cleans 10% of your blood at all times |
cartilage | chondrocytes |