Histology

Histology - Histology - study of tissues Tissues - cells...

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1Histology - study of tissues Tissues - cells similar in structure and function 1. 4 primary types a. Epithelium b. Connective c. Muscle d. Nervous (neural) 2. Epithelial - linings, coverings, boundaries e. Functions i. Protection - bacteria (disease producing organisms), sun, other environmental elements, water loss ii. Control of permeability - absorption iii. Provide sensation iv. Secretion f. Characteristics i. Apical surface - faces outside ii. Basement membrane iii. Avascular - without blood supply iv. Regenerates easily g. Classified by shape and layer i. Shapes (1) squamous - “squashed” (2) cuboidal - square (3) columnar - rectangular/columns ii. Layers (1) simple - single layer (2) stratified - more than one layer (3) pseudo stratified - look like they are in layers but actually are not a. Glands - epithelial tissue that makes a secretion i. Endocrine glands - do not have ducts, secretions go directly into blood or tissue (hormones) ii. Exocrine glands - produce secretion that comes out of the cell through
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This note was uploaded on 04/10/2008 for the course BIOL 109 taught by Professor Mister during the Spring '08 term at UMBC.

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Histology - Histology - study of tissues Tissues - cells...

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