name the four types of tissue

connective - protects, binds and supports epithelial - lines and covers surface muscle - produces movement nervous - control, receives stimuli and conducts impulses

define tissue

a group of specialized cells

functions of epithelial tissue

lining and covering epithelia (protection) secretory (glandular) epithelia absorption filtration sensory reception

classification of epithelial cell shape & layers

call layer - simple - allow substances to pass through - stratified - protection cell shape - squamous - secrete & absorb (squamous-squashed) - cuboidal - protect secrete and absorb - columnar - secrete absorb with protect

simple squamous epithelium

def- simplest epithelia, single layer of flattened cells func- allows passage of materials by diffusion loc- air sacs of lungs

simple cuboidal epithelium

des- single layer of lake cubelike cells func- secretion & absorption loc- ovary surface

simple columnar epithelium

des- single layer of tall cells, some w cilia func- absorption & secretion of enzyme loc- nonciliated - digestive tract. ciliated - uterus lining

stratified squamous epithelium

def- several layers of cells. basal active, surface cells dead func- protects loc- nonkertain - mouth. kertain - skin

types of connective tissue

- loose - fat - blood - bone - dense - cartilage

connective tissue function

protection, binding & insulation

specialise cells