Epithelial Tissue

what is pseudostratified columnar epithelium?

appear layed due to the varying positions of their nuclei within the row of cells, but are not truely layered

how is epithelial tissue classified?

cell shape and the number of cell layers

what may be present is pseudostratified columnar epithelium cells?

cilia and mucus-secreting goblet cells, that line and sweep debris from respiratory tubes

what is simple cuboidal epithelium?

consist of a single layer of cube-shape cells with centrally located nuclei

what is transitional epithelium?

designed to distend and return to its normal size, as it does in the lining of the urinary bladder, urethra and ureters. this design provides distensibility and keeps urine from diffusing back into the internal cavity.

order of exposure

free surface ----> epithelial cells ----> basement membrane ----> connective tissue

what is simple squamous epithelium

made up of a single layer of thin, flattened cells

what is stratified squamous epithelium?

made up of layers of flattened cells that are designed to protect underlying layers

what is simple columnar epithelium?

made up of one row of elongated cells whose nuclei are all located near the basement membrane

what is the function of epithelial tissue?

protection, secretion,aborption and excretion

what tissue is most likely to be found lining the respiratory passageway due to its ability to move mucus?

pseudostratified columnar epithelium

what type of epithelial tissue? linings of respiratory passages

pseudostratified columnar epithelium

what is the function of simple cuboidal epithelium?

secretions and absorption in the kidneys, secretion in glands, and covers the ovaries

layers of epithelial tissue

simple (1) stratified (more than one)

what type of epithelial tissue? lining of stomach and intestines

simple columnar epithelium

what are the only cells we will learn that have microvilli?

simple coulmnar epithelium

what type of epithelial tissue? Air sacs of the lungs and walls of capillaries.

simple squamous epithelium

shapes of epithelial tissue

squamous, cuboidal and columnar

Due to its exposure to friction and its protection function, what type of epithelial tissue is best suited for the outer layer of skin?

stratified squamous epithelium

what type of epithelial tissue? Outer layer of skin and lining of the inside of the cheek

stratified squamous epithelium

what is the function of simple squamous epithelium?

suited for diffusion. functions in the exchange of gases in the alveoli of the lungs and lines blood and lymph vessels as well as body cavities.

what type of epithelial tissue? Inner lining of the urinary bladder

transitional epithelium

what is epithelial tissue?

widespread throughout the body; covers organs and lines body cavities and hollow organs