Epithelial tissue Flashcards
What is hematoxylin and its uses?
Basic violet stain
Stains basophilic acidic structures
What is eosin and its uses?
Acidic pink stain
Stains acidophilic basic structures
What is the function of epithelium?
Covers body surfaces
Lines body cavities
Forms glands
What are the general features of epithelium?
Basal lamina
Junctional complex
Avascular
Regeneration
Polarity
What are the classifications of epithelium
Simple
Stratified
Squamous
Cuboidal
Columnar
What are the characteristics of simple squamous epithelium and where can it be found
Single layer of flat cells
Vascular system, peritoneum, pleura, pericardium, Bowman’s capsule, lung alveoli
What are the characteristics of simple cuboidal epithelium and its locations?
Single layer of square cells
Small ducts of exocrine glands, surface of ovary, kidney tubules, thyroid follicles
What are the characteristics of simple columnar epithelia and its locations?
Long with nucleus at bottom - single layer
Intestines, stomach, gallbladder, bronchiole, fallopian tube, uterus
What is the characteristics of pseudostratified columnar and its locations?
Single layer of columnar shaped cells of varying length
Epididymis
Vas deferens
Nose
Larynx
Trachea
Bronchus
What are the functions of stratified squamous epithelium?
Barrier
Protection
What is keratinized stratified squamous epithelium?
Epidermis of skin
Filled with keratin - no nucleus
Where is non-keratinized stratified squamous epithelium located?
Oral cavity
Esophagus
Cornea
Vagina
What is the function of stratified cuboidal epithelium and where is it located?
Barrier and conduit
Sweat gland ducts
Large ducts of exocrine glands
What are the functions and location of stratified columnar epithelium?
Barrier and conduit
Largest ducts of exocrine glands
What is transitional stratified epithelium, its functions, and its location?
Dome shape of cells
Barrier
Distensible property
Urinary tract
