Epithelial tissue Flashcards
Epithelial
Covering
The four main types of tissue in the body are?
Epithelial
Connective
Muscle
Nervous
Connective
Support
Muscle
Movement
Nervous
Control
Unique epithelial tissue characteristics
Cellularity
Polarity
Epithelial tissue:
Cellularity
Cells tightly packed with little intercellular matrix
Epithelial tissue:
Polarity
Cells have apical and basal surface
Epithelial tissue:
Polarity:
Apical surface
Free surface of cell, not in contact with other cells
Epithelial tissue:
Polarity:
Basal surface
Cells are attached to underlying connective tissue by a basement membrane
Simple epithelium
One cell layer thick
All cells in direct contact with basement membrane
Stratified epithelium
Two or more layers of epithelial cells
Pseudostratified epithelium
All cells attach to basement membrane but appear layered
Squamous cells
Flat, wide, irregular shape
Cuboidal cells
As tall as they are wide
Columnar cells
Slender and taller than they are wide
Transitional cells
Change shape depending on stretch of epithelium
Simple squamous epithelium
Thinest possible barrier
When identifying tissue, what are the steps for naming?
Ciliated or nonciliated
Determine layering of cells
Determine shape of cells
Determine type of tissue
What names of the three types of cell layers?
Simple
Stratified
Pseudostratified
What are the 4 names of tissues that describe the shape and the way the cells look?
Squamous
Cuboidal
Columnar
Transitional
Where is transitional epithelium found?
Lining of urinary bladder
This structure binds epithelial cells to the basement membrane
Hemidesmosomes
Sebaceous glands are an example of this kind of gland in which the entire cell becomes part of its secretion
Holocrine gland
