Thyroid gland secretes its pdt into follicle for

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Unformatted text preview: ounded by connective tissue! Thyroid gland secretes its pdt into FOLLICLE for storage! Fig. 4-19 Exocrine glands have systems of ducts. Here the secretory units are usually shaped as elongated rounded acini (or alveoli) or tubules. These all drain into epithelial ducts that carry the product to specific places, usually to larger compartments or surfaces, also lined by epithelium. General structure of glands: If secretory portions are ROUNDED, referred to as ACINUS. Acini fairy small -- less than a dozen cells. If larger, sometimes calld alveoli. But both terms mean ROUNDED portions. Note the functional (“secretory” here) part is termed the “parenchyma” and the supporting, connective tissue part is called the “stroma” (not shown here). UNDERSTAND THIS TERM! "FUNCTIONAL CELLS" UNIQUE TO THAT SPECIFIC ORGAN & CAUSE IT TO PERFORM ITS SPECIFIC FXN! The outermost layer of connective tissue is called the gland’s capsule. Septa often extend into the gland from the capsule, subdividing the gland into lobes. Larger ducts usually are located along the septa. If secretory region is ELONGATED, referred to as TUBULE. Fig. 4-20 CONNECTIVE TISSUE SURROUND THESE EPITHELIA THAT ARE PART OF THE DUCT!!! ---- STROMA. Contains capillaries and lots of c...
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This document was uploaded on 02/04/2014.

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