chapter 5 Flashcards
group of cells that function together in the body
tissue
form coverings, linings, and glands
epithelial tissue
protection and support
connective tissue
provides movement
muscle tissue
allows communication
nervous tissue
material found outside the tissue
extracellular matrix (ecm)
major component of ecm that is tough, protective protein fibers
collagen
major component of ecm that is negatively charged protein/carbohydrate molecules
proteoglycans
attachment between cells
cellular connections
allow no movement of substances between cells
tight junctions
flexible connections that allow some movement of substances between cells
desmosomes
passageways that allow movement of certain substances between cells
gap junctions
passageways that allow movement of certain substances between cells
gap junctions
tight junctions occur in which organs and in what type of tissue
epithelial tissue of bladder and digestive tract
it can be found between cardiac muscle fibers
desmosomes and gap junctions
what factors affect the appearance of tissues
plane of section and stain used during preparation
kinds of planes (sections)
sagittal, transverse, oblique
two surfaces of epithelia
apical and basal
two surfaces of epithelia
apical and basal
characteristics of epithelia
highly cellular, polar, avascular, innervated, highly regenerative
characteristics of epithelia
highly cellular, polar, avascular, innervated, highly regenerative
it moves materials across the surface
cilia
it increases the surface area
microvilli
it increases the surface area
microvilli
