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Simple squamous - location
- lining of bvs
- lining of heart
- lymphatic vessels
- kidney glomeruli (Bowman's capsule)
Simple cuboidal - location
- kidney tubules (PCT)
- ducts and secretory portions of small glands
- ovary surface
simple squamous - function
- reduces frictional surfaces
simple cuboidal - function
simple columnar - location
- small bronchi
- uterine tubes
- some regions of the uterus
simple columnar - function
what cells are cilia found on? why?
simple columnar - helps move substances through internal passageways
stratified squamous - location
- Keratinized: Forms the external part of the skin's epidermis
- Non-keratinized: lines the esophagus, mouth, vagina
stratified squamous - function
protection of underlying areas subjected to abrasion
stratified cuboidal - location
- some sweat glands and mammary glands
stratified columnar - location
- male urethra
- lining some glandular ducts
- transition areas between two other types of epithelia
pseudostratified columnar epithelial - location
- male sperm-carrying ducts (non-ciliated)
- trachea (ciliated)
pseudostratified columnar epithelial - function
secretion and propulsion of mucus (via goblet cells)
transitional epithelial - location
- lines the urinary bladder
- part of the urethra
transitional epithelial - function
stretches to permit the distension of the urinary bladder.
simple squamous - nuclei characteristic
disc-shaped, protrudes apically
simple cuboidal - nuclei characteristics
Spherical, central nuclei
Simple columnar - nuclei characteristics
oval nuclei located more towards the basal membrane
pseudostratified columnar - nuclei characteristics
seen at different layers
uncontrollable growth and dissemination or recurrence after removal
malignant neoplasm derived from epithelial tissue
a malignant neoplasm of epithelial cells in glandular or gland-like pattern
the appearance of neoplasms in parts of the body remote from the site of the primary tumor.
What type of epithelial cells may be ciliated?
- simple columnar
- non-ciliated: digestive tract, gallbladder
- ciliated: small bronchi, uterine tubes, some regions of the uterus
- cilia help move substances through internal passageways
- pseudostratified columnar:
- non-ciliated: sperm-carrying ducts
- ciliated: trachea
What type of cells appear polygonal on a surface view?
What type of cell is involved in gas exchange?
simple squamous in the alveoli of the lung
what type of cell lines the ventral surface of organs?
simple squamous which makes up mesothelium.
what type of cell asts as a lubricating membrane for the lung and heart?
What type of cell aids in absorption in the tubules in the renal cortex?
what type of cell aids in secretion in the salivary glands?
what type of cell aids in absorption in the gallbladder?
simple columnar (non-ciliated)
what type of cell aids in transportation and absorption with cilia, lining the lumen of the intestine?
simple columnar (ciliated)
What type of cell aids in protection and secretion, lining the vagina, esophagus, and mouth?
stratified squamous (non-keratinized)
what type of cell aids in protection in its keratinized form?
stratified squamous - epidermis of the skin
function of tight junctions
- intercellular jucntions that maintain cell adhesion and communication between adjacent epithelial cells.
- lateral surfaces
function of occludin
forms a belt around adjacent cells
function of desomosomes
these plaques are distributed along the lateral surface of adjacent epithelial cells, and maintani cell adhesion
function of gap junctions
- allows passage of aa, ions, and small proteins between adjacent cells (less than 1kDa).
- Important in cardiac muscle, allowing movement of calcium ions.
The lumen of the trachea is covered by what type of cell?
pseudostratified ciliated columnar epithelium
the lumen of the small intestine, gall bladder, and colon are covered with what type of cell?
simple columnar epithelium
the kidney tubular ducts are lined by what type of epithelium?
simple cuboidal epithelium
keratinized stratified squamous epithelium is found where?
non-keratinized stratified squamous epithelium is found where?
mouth, esophagus, vagina
What are papillae? Why are they important?
- projections of the underlying connective tissue that carry nutrients up to the basement membrane separating the connective tissue from the epithelial tissue.
- important because epithelial tissue does not contain blood vessels.
the salivary glands contain what type of cells?
stratified cuboidal and stratified columnar epithelium
the lumen of the urinary bladder is composed of what type of epithelium?