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Additional recommended knowledge
Glands can be divided into two groups:
The type of secretory product of an Exocrine gland may also be one of three categories:
Every gland is formed by an ingrowth from an epithelial surface. This ingrowth may from the beginning possess a tubular structure, but in other instances glands may start as a solid column of cells which subsequently becomes tubulated.
As growth proceeds, the column of cells may divide or give off offshoots, in which case a compound gland is formed. In many glands the number of branches is limited, in others (salivary, pancreas) a very large structure is finally formed by repeated growth and sub-division. As a rule, the branches do not unite with one another, but in one instance, the liver, this does occur when a reticulated compound gland is produced. In compound glands the more typical or secretory epithelium is found forming the terminal portion of each branch, and the uniting portions form ducts and are lined with a less modified type of epithelial cell.
Glands are classified according to their shape.
A list of human exocrine glands is available here.
A list of human endocrine glands is available here.
Categories: Endocrine system | Exocrine system | Glands
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Gland". A list of authors is available in Wikipedia.|