Glandular epithelium

Glandular epithelium - cells respectively A multicellular...

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Glandular epithelium Glandular epithelium forms two kinds of glands:  Endocrine glands  secrete  hormones  directly into the bloodstream. For example, the  thyroid gland secretes the hormone thyroxin into the bloodstream, where it is distributed  throughout the body, stimulating an increase in the metabolic rate of body cells.  Exocrine glands  secrete their substances into tubes, or ducts, which carry the  secretions to the epithelial surface. Examples of secretions include sweat, saliva, milk,  stomach acid, and digestive enzymes.  Exocrine glands are classified according to their structure (see Figure 2):  Unicellular or multicellular describes a single-celled gland or a gland made of many 
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Unformatted text preview: cells, respectively. A multicellular gland consists of a group of secretory cells and a duct through which the secretions pass as they exit the gland. • Branched refers to the branching arrangement of secretory cells in the gland. • Simple or compound refers to whether the duct of the gland (not the secretory portion) does or does not branch, respectively. • Tubular describes a gland whose secretory cells form a tube, while alveolar (or acinar) describes secretory cells that form a bulblike sac....
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This note was uploaded on 11/10/2011 for the course PT 101 taught by Professor Staff during the Spring '10 term at Texas State.

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