Anatomy Chapter 4

histology

study of tissues

tissues

groups of cells similar in structure that perform common or related functions

To view a slide under a microscope, what 3 things do you do?

fix: preserved w solvent

section: cut into slices

stain: color

Epithelium Tissue

sheet of cells that cover a body surface or line a body cavity

function of epithelium tissue

protection, absorption, filtration, excretion, secretion, and sensory reception

apical surface

upper side, most are smooth, but some have fingerlike projections w microvilli

basal surface

lower side, attaches to basal lamina, an adhesive sheet that holds basal surface to epithelial cells to underlying cells

does epithelial tissue have blood vessels?

no

epithelium tissue regeneration

high capacities, stimulated by loss of apical based polarity and broken lateral contacts