Epithelial Tissue and the Integumentary System Flashcards
Dermal Papillae
epidermal ridges
papillary layer
reticular layer
tactile (Meissner’s) corpuscle
lamellar (pacinian) Corpuscle
keratinocytes
melanocytes
free nerve endings
Stratum Spinosum
Stratum granulosum
stratum lucidum
stratum corneum
simple squamous
function: absorption, filtration, diffusion
Ex: renal glomeruli, lungs, external surface of small intestine
simple cuboidal
Function: secretion, absorption
Ex: tubules in the kidney, mammary ducts, surface of the ovaries
simple columnar
Function: Secretion, absorption
Ex: internal surface of small intestine, digestive tract
stratified squamous keratinized
protects underlying tissue, provides semi-waterproof membrane
Ex: soles of feet, palms of hand
stratified squamous nonkeratinized
Protects underlying tissue, some absorption
Ex: tongue, lining of oral cavity
pseudo-stratified epithelium
What is the function of Epithelial tissue
secretion, protection, excretion, absorption, filtration, sensation
secretion
process of movement of material internally ( enzyme, saliva, hormones)
excretion
process of waste removal from the body (solid wastes, sweat, CO2)
Endocrine gland
- secrete into bodily fluids
- no ducts: dense capillary net work
- pineal, pituitary, ect.
exocrine gland
- secrete outside or into lumen
- lumen: inside the digestive tract
simple epithelium
one layer
stratified epithelium
multi layered
Squamous
thin and scaly
cuboidal
squarish or round style cells
columnar
tall narrow cells
Pseudo-stratified columnar
Function: secretion, absorption
Ex: ciliated- lining of the trachea/ upper resp. tract
Non-ciliated: lining of the male reproductive duct
