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<a accesskey="3" href="page.php?w=duct_%28anatomy%29&amp;p=2">3.Next</a>
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<p>In <a href="page.php?w=anatomy">anatomy</a> and <a href="page.php?w=physiology">physiology</a>, a <b>duct</b> is a circumscribed channel leading from an <a href="page.php?w=exocrine_gland">exocrine gland</a> or <a href="page.php?w=Organ_%28anatomy%29">organ</a>.</p>

<p><big>Types of ducts</big></p>
<p>Examples include:</p>

<p><big>Duct system</big></p>
<p>As ducts travel from the <a href="page.php?w=acinus">acinus</a> which generates the fluid to the target, the ducts become larger and the epithelium becomes thicker. The parts of the system are classified as</p><p>
<a accesskey="3" href="page.php?w=duct_%28anatomy%29&amp;p=2">3.Next</a>
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