Epithelial tissue Flashcards
1
Q
Types
A
- Simple (squamous, cuboidal, columnar)
- function: absorption, secretion, filtration
- stratified (squamous, cuboidal, columnar, transitional)
- function: protection
- glandular
2
Q
Apical surface
A
Free surface exposed to the body’s exterior/cavity
Slick or smooth, or have microvilli or cilia
3
Q
Basement membrane
A
Lower surface of epithelium, made of structureless material of epithelial and connective tissue
- simple (squamous, cuboidal) epithelia
- stratified (cuboidal, columnar) epithelia
4
Q
Simple squamous epithelia
A
- on basement membrane
- filtration by rapid diffusion
- in lungs
- membrane lining the central body cavity
5
Q
Simple cuboidal membrane
A
- basement membrane
- forms walls of kidney tubules
- function: secretion and absorption; violated types propel mucus or reproductive cells
- found in glands and ducts
6
Q
Simple columnar epithelia
A
- found in Goblet cells (cells that produce lubricating mucus)
- found in digestive tract from the stomach to the anus
- function: secretion and absorption
7
Q
Pseudostratified columnar epithelia
A
-lines most of respiratory tract
8
Q
Stratified squamous epithelia
A
- on free surface (mouth, esophagus, outer layer of skin)
- function: protection
9
Q
Stratified cuboidal epithelia
A
- not very present in human body
- on basement membrane
- just two layers
10
Q
Stratified columnar epithelia
A
- on basement membrane
- mainly in ducts of large glands
11
Q
Transitional epithelia
A
- modified stratified squamous epithelia
- lining of urinary organs
12
Q
Glandular epithelia
A
- function: secretion
- composed of endocrine and exocrine glands
13
Q
Endocrine glands
A
- ductless
- diffuse directly into blood
- ex) hormones (adrenal, thyroid, pituitary)
14
Q
Exocrine glands
A
- sweat and oil glands
- in liver and pancreas
- secrete empty through ducts to epithelial surface
