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Histology

Histology - Term Definition Histology The study of tissues...

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Term: Histology Definition: The study of tissues Term: Epithelial Tissue Definition: Covers exposed surfaces, lines passageways, forms glands Term: Basement Membrane Definition: An amorphous material secreted partly by epithelial cells (basal lamina) and connective tissues cells (reticular lamina) that are adjacent to each other Term: Simple Squamous Epithelium Definition: Locations: kidney glomeruli; air sacs of lungs; lining of heart, blood vessels, and lymphatic vessels; lining of ventral body cavity. Functions: allows passage of materials by diffusion and filtration in sites where protection is not important; secretes lubricating substances in serosae.
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Term: Stratified Squamous Epithelium, Keratinized Definition: Locations: epidermis. Functions: protects underlying tissues in areas subject to abrasion. Features thick layer of dead cells that are full of keratin Term: Stratified Squamous Epithelium, Non-Keratinized Definition: Locations: moist linings of esophagus, mouth, and vagina. Functions: protects underlying tissues in areas subject to abrasion. Term: Simple Cuboidal Epithelium Definition: Locations: kidney tubules; ducts and secretory portions of small glands; ovary surface. Functions: secretion and absorption Term: Simple Columnar Epithelium, Ciliated Definition: Locations: small bronchi, uterine tubes, some regions of uterus. Functions: propel mucus (or reproductive cells). Term: Tissue Definition: Groups of cells that are similar in structure and function
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Term: Organ Definition: Two or more tissues that work together to perform a specific function Term: Functions of Epithelial Tissue Definition: 1. Physical protection of underlying tissues; 2. Control permeability; 3. Produce specialized excretions (endocrine and exocrine) Term: General Characteristics of Epithelial Tissue Definition: 1. Layers of closely packed cells; very little intercellular materials; 2.
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