Epithelial Cells, Exam 1 Flashcards
Simple Squamous
Description: one layer, flat and thin
Function: allows for diffusion and filtration
Location: blood vessels, alveoli of lungs, lining of heart
Stratified Squamous
Description: thick membrane composed of several layers. Cells come up from below, old cells exfoliate from surface
Function: Protects underlying tissues in areas subjected to abrasion
Location: lining of esophagus, mouth, and vagina
Simple Cuboidal Epithelium
Description: single layer of cubelike cells
Function: secretion and absorption
Location: kidney tubules, ducts and secretory portions of small glands, ovary surface
Simple Columnar Epithelium
Description: single layer of tall cells, apical surface may be ciliates; oval or oblong nucleus
Function: absorption, secretion of mucus and enzymes, ciliated type propels mucus
Location: nonciliated type lines most of the digestive track, gallbladder, and excretory ducts of some glands; ciliated type lines small bronchi, uterine tubes, and regions of the uterus
Pseudostratified Ciliated Columnar Epithelium (PCCE)
Description: single layer of cells at differing heights
Function: secretion, particularly of mucus; propulsion of mucus by ciliary action
Location: nonciliated type in male’s sperm carrying ducts, and in ducts of large glands; ciliated type in trachea and upper respiratory tract
Transitional Epithelium
Description: resembles both stratified squamous and stratified columnar
Function: stretches readily and allows the bladder to stretch
Location: Lines the ureters, bladder, and part of the urethra
