Epithelium I Flashcards
What are the epithelial cell domains?
1) Apical
2) Lateral
3) Basal (basolateral)
What is the epithelial sheet anchored to?
Basal lamina
What three characteristics are used to classify epithelium?
1) Number of cell layers
2) Cell shape in superficial layer
3) Presence of specialization of plasma membrane
What are the functions of simple squamous epithelium?
1) Blood-brain barrier
2) Filtration
3) Exchange
Where is simple cuboidal epithelium found?
1) Thyroid follicles
2) Renal tubules
3) Ducts of glands
What are the functions of cuboidal epithelium?
1) Absorption
2) Secretion
3) Barrier
4) Conduit
What are the locations of nonciliated simple columnar epithelium?
1) Stomach
2) Intestines
What is the location of ciliated simple columnar epithelium?
Uterine tubes
What are the functions of simple columnar epitheilum?
1) Absorption
2) Secretion
3) Barrier
What are the locations of ciliated pseudostratified columnar epithelium?
1) Trachea
2) Bronchi
3) Ducts of male reproductive system
What are the functions of ciliated pseudostratified columnar epithelium?
1) Secretion
2) Absorption
3) Barrier
4) Transport
What are the locations of nonkeratinized stratified squamous epithelium?
1) Esophagus
2) Distal anal canal
3) Vagina
What is the location of keratinized stratified squamous epithelium?
Epidermis
What are the functions of the stratified squamous epithelium?
1) Barrier
2) Protection
What are the locations of transitional (urothelium) epithelium?
1) Ureters
2) Urinary bladder
3) Urethra
What are the functions of transitional (urothelium) epithelium?
1) Barrier
2) Protection
3) Distension
Are primary cilia motile or nonmotile?
Nonmotile
What is the defect in Kartagenar syndrome?
Defective dynein arms lead to immotile cilia and flagella
What is the arrangement of microtubules in flagella?
9 doublets + 2 singlets arrangement
Glycocalyx reacts with what stain?
PAS
What is contained in the terminal web to mediate movement?
1) Myosin II
2) Tropomyosin
Are sterocilia actually cilia?
No - they are elongated microvilli
Are sterocilia motile or nonmotile?
Nonmotile
What is an example of epithelium that is vascularized?
Stria vascularis
