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Where can Simple Squamous Epithelium be found?
Alveoli (air sacs of lungs), lining of heart chambers and endothelium (lumen of blood vessels), Mesothelium (serious membrane of body cavities)
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Where can Simple Cuboidal Epithelium be found?
Thyroid gland follicles, kidney tubules, ducts of secretory glands. Regions of most glands, surface of ovaries.
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Where can Nonciliated Simple Columnar Epithelium be found?
Lining of the digestive tract, lining of the stomach does not contain goblet cells
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Where can Ciliated Simple Columnar Epithelium be found?
Lining of the uterine tubes and larger bronchioles of respiratory tract
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Where can Transitional Epithiliam be found?
Urinary bladder lining
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Where can Pseudostratified Columnar Epithelium be found?
- Ciliated form lines most of the respiratory tract, nasal cavity, part of pharynx, larynx. Trachea and bronchi
- non ciliated is rare but can be found in the lining of the epididymis
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Where can Nonkeratinized Stratified Squamous Epithelium be found?
Lining the oral cavity, part if the pharynx, esophagus, vagina and anus.
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Where can Keratinized Stratified Squamous Epithelium be found?
Epidermis of the skin
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Where can Stratified Columnar Epithelium be found?
Male Urethra
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Where can Stratified Cuboidal Epithelium be found?
- duct of sweat gland
- Mammary glands
- salivary glands
- Most exocrine glands
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Three types of junctions
- 1. Tight Junctions
- 2. Desmosomes
- 3. Gap Junctions
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Naming Cell Shape
- 1. Squamous: Flattened, looks like fried egg
- 2. Cubodial: Cells are as tall as wide, often have round nuclei
- 3.Columnar: Tall and elongated
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Naming Cell Layers
- 1.) simple- single layer of cells, does not offer good protection, concerned with absorption, secretion and filtration
- 2.) Stratified- More than one layer
- 3.) Pseudostratified- Pseudo means false, appears to be stratified but upon closer look all cells are attached to basement membrane
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How to recognize epithelium tissue
- There is a free surface
- Cells are smashed right next to each other
- There is a basement membrane
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