This preview shows page 1. Sign up to view the full content.
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...
View Full Document
This document was uploaded on 02/04/2014.
- Spring '14