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Daphne Sumodlayon posted an update in the group
MT30-Histology Art AB 3 years, 8 months ago EPITHELIAL TISSUE – This kind of tissue forms sheets of cells that cover the surface of our body (epithelium). Epithelial tissue lines on the surface of body cavities. Its functions include glandular secretion, creates protective boundaries, and involved in the diffusion of ions and molecules. Epithelial tissue has aggregated polyhedral cells which are held together by tight junctions attached to the basement membrane.
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Location: kidney glomeruli, air sacs of lungs, the lining of the heart and
blood vessels, and lining of the ventral cavity
Function: allows passage of materials by diffusion and filtration
Simple Cuboidal
Location: kidney tubules, ducts of small glands, ovary surface, pancreas,
and salivary glands
Function: secretion and absorption
Simple Columnar
Location: Non-ciliated: digestive tract and gallbladder
Ciliated: small bronchi and uterine tubes
Function: absorption, secretion, and propels mucus
Location: Non-keratinized: esophagus, mouth, vagina
Keratinized epidermis of the skin
Function: protects underlying tissue in areas subjected to abrasion
STRATIFIED CUBOIDAL
Location: sweat glands, developing ovarian follicles
Function: protection and secretion
STRATIFIED COLUMNAR
Location: conjunctiva
Function: protection
PSEUDOSTRATIFIED COLUMNAR
Location: Non-ciliated: large glands and parts of the male urethra
Ciliated: trachea, the upper part of the respiratory system
Function: absorption and secretion of mucus, protection from foreign, and transport of materials such as hormones and enzymes
TRANSITIONAL EPITHELIUM
Location: ureters, urinary bladder, parts of the urethra
Function: stretches readily and permits distension of urinary organs by stored urine