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Anatomy-Tissue
Human Anatomy - Epithelial and Connective Tissue
Question | Answer |
---|---|
Single layer of flattened cells. | Simple Squamous Epithelium |
Disc-shaped central nuclei and sparse cytoplasm. | Simple Squamous Epithelium |
Function: Allows passage of materials by diffusion and filtration; protection not as important; lubrication | Simple Squamous Epithelium |
Location: air sacs of lungs, lining of heart / ventral cavities, blood vessels | Simple Squamous Epithelium |
Single layer of cubelike cells w/ large, spherical central nuclei | Simple Cuboidal Epithelium |
Function: Secretion and Absorption | Simple Cuboidal Epithelium |
Location: Kidney tubules, ducts and secretory of small glands, ovary surface | Simple Cuboidal Epithelium |
Single layer of tall cells with round to oval nuclei | Simple Columnar Epithelium |
some cells bear cilia, layer may contain mucus-secreting unicellular glands (goblet cells) | Simple Columnar Epithelium |
Function: Absorption, Secretion of Mucus and Enzymes | Simple Columnar Epithelium |
Location: Digestive Tract (stomach to anal canal), gallbladder | Simple Columnar Epithelium |
Single layer of cells of differing heights, some do not reach free surface. Nuclei on different levels | Pseudostratified Columnar Epithelium |
Function: Secretion (mucus), propulsion (Antrieb) of mucus | Pseudostratified Columnar Epithelium |
Location: male's sperm-carrying ducts or ducts of large glands, trachea (upper respiratory tract) | Pseudostratified Columnar Epithelium |
Thick membrane composed of several cell layers, basal cells are cuboidal or columnar; surface cells are keratinized | Stratified Squamous Epithelium |
Function: Protection of underlying tissue | Stratified Squamous Epithelium |
Location: Nonkeratinized: Esophagous, mouth, vagina; keratinized: epidermis | Stratified Squamous Epithelium |
Two layers of cubelike cells | Stratified Cuboidal Epithelium |
Function: Protection | Stratified Cuboidal Epithelium |
Location: Sweat Glands, Mammary Glands, Salivary Glands | Stratified Cuboidal Epithelium |
Several Cells Layers (basal: cuboidal / superficial: elongated & columnar) | Stratified Columnar Epithelium |
Function: Protection, Secretion | Stratified Columnar Epithelium |
Location: RARE, small amount in male urethra and in some gland ducts | Stratified Columnar Epithelium |
Resembles both stratified squamous and stratified cuboidal (basal: cuboidal or columnar / superficial: dome shaped or squamous) | Transitional Epithelium |
Function: Stretches readily, permits distension (Dehnung) of urinary organ (volle Blase) | Transitional Epithelium |
Location: Ureters, bladder and part of urethra | Transitional Epithelium |