Epithelial tissue Flashcards
Where is epithelial tissue found
Covering all body surfaces inside and out
What is the apical side of epithelium
The side exposed to the outside or open space inside the body
What is the basal side of epithelium
The side of the tissue at the basement membrane
What is the basement membrane
The nonliving layer that epithelial tissue is anchored to using connective tissue
What is the vascularity of epithelial tissues
Avascular
Why do epithelial tissues repair quickly?
Because they reproduce rapidly
How are cells arranged in epithelial tissues?
tightly packed together - littler intercellular space
What are the functions of epithelial tissues?
G - glandular
A - absorption
P - protection
S - Secretion
What is the structure of simple squamous epithelium?
1 cell layer thick with squished cells that look like fried eggs
What do simple squamous epithelium do?
diffusion of gases
secrete serous fluid to lubricate organ coverings
Where can simple squamous epithelium be found?
Linings of alveoli, capillaries, lymph vessels, organs
What do simple columnar epithelium look like?
1 cell layer of column-shaped cells with nuclei at the bottom of cells
What special cell do simple columnar and pseudostratified ciliated columnar epithelium have?
Goblet cells
What is the function of goblet cells?
Secrete mucus to protect and lubricate tissues
What is the brush border composed of?
microvilli that increase the surface area for absorption