Epithelial tissues chapter 4 Flashcards
Epithelial tissue function
Provides physical protection
Controls permeability and forms glands
Produce specialized secretions
Epithelial tissue location
Lines the outer surfaces of organs and blood vessels thought out the body, as well as the inner surfaces of cavities in many internal organs.
Epithelial tissue characteristics
Cellularity(cell junctions)
Polarity(apical and basal surfaces)
Attachment(basal lamina)
Avascularity
Regeneration
Apical( the cell is exposed to internal and external environments)
Basal( cells attaches to underlying epithelial cells and deeper tissues)
Goblet cells
Are cells that secrete mucous
Ciliated epithelium
Moving particles or fluid over the epithelial surface in such structures as the trachea, bronchial tubes, and nasal cavities.
It acts like a brush to move particles.
Non-ciliated epithelium
Tissues that don’t have cilia that is being use to move particles. No hairlike structures.
Simple squamous
Flat cells
Simple cuboidal
Cube cells
Simple columnar
Long cells
Simple
One layer of cells
Stratified
Many layers of cells
Exocrine glads
Glands that release secretions into ducts
Glands that exit through Golgi apparatus into body ducts
In doctrine glands
Glands that release hormones into intertidal fluid
They have no ducts
They release directly into the bloodstream
Simple squamous function
Diffusion and secretion
Simple squamous location
Alveoli of lungs for gas exchange
Lining of blood vessels
Stratified squamous function
Protection
Stratified squamous location
Skin, mouth, vagina, rectum, and anus.
Simple cuboidal function
Secretion
Simple cuboidal function
Kidney tubules, endocrine glands, and exocrine glands.
Stratified cuboidal function
Secretion and protection.
Stratified cuboidal location
Endocrine glands and exocrine glands.
Transitional epithelium function
Stretch and recoil.
Transitional epithelium location
Urinary bladder, ureters, and urethra.
Simple columnar function
Absorption of nutrients and secretion.
Simple columnar location
Stomach, small intestine, and large intestine.
Pseudostratified columnar function
Secretion and absorption.
Pseudostratified columnar location
Trachea
Stratified columnar function
Secretion and protection.
Stratified columnar location
Reproductive tract for males.
Male urethra and glands.
