Skin Flashcards
Layers of Skin
Epithelial
Dermis
Hypodermis
Layers of Epidermis
top: Stratum Corneum
Stratum Granulosum
Stratum Spinosum
bottom: Stratum Germinativum
Classify
Shape, layer, simple/stratified, special structure (e.g. cilia)
Stratum Corneum
stratified, squamous, (non-)keratinized
Stratum Granulosum
stratified, squamous, keratohyalin granules
Stratum Spinosum
stratified polygonal
Stratum Germinativum
simple columnar
Hypodermis cells
adipose tissue
Functions of skin
protection - resists abrasion and penetration
thermoregulation
sensation
communication - visual and pheromonal signals
immunity
containment - skin prevents loss of body fluid
appendages - hair, nails, sweat glands, sebaceous glands
Basement membrane
structure which separates epidermis from dermis
made of connective tissue matrix
Classification of epithelia
simple
stratified (multiple layers)
pseudostratified
Simple epithelia
simple squamous (flat)
simple cuboidal
simple columnar
Stratified epithelia
stratified squamous (keratinised and keratinised) (flat)
stratified transitional (only found in bladder)
Pseudostratified epithelia
columnar (looks stratified but not e.g. goblet cells) (found in digestive tract)
