Page 9 - LN-CH-16

Other Glands
Apart from the above mentioned major glands, other glands also plays an important
role in completion of the process of digestion.
These are mentioned below as
Gastric Glands
The glands of stomach are called gastric glands. These are present in the mucosa of
the stomach.
The gastric gland contains the following three types of secretory cells
(a) Mucus or goblet cells, secretes alkaline mucus.
(b) Peptic o( chief or zymogenic cells, secretes inactive precursors of gastric
enzymes.
(c) Parietal or oxyntic cells, secretes HCl and CIF (Castles Intrinsic Factor).
Intestinal Glands
The epithelium of intestine bears a large number of glands. Most of these glands are
formed by the modification of the surface epithelial cells and are located on villi.
(a) Brunners glands are present only in the submiicosa of duodenum (not in ileum
and jejunum).
(b) The lamina propria of small intestine contains large masses of lymphocyte cells
called lymph nodules or Peyers patches. These help in destroying harmful bacteria
of the region.
(c) The mucus portion contain simple, tubular intestinal glands or crypts of
Leiberkuhn.
These are pit-like glands with three types of cell, i.e.,
* Undifferentiated epithelial cells
* Zymogenic cells or cells of Paneth
* Argentaffin or enterochromaffin cells.
In general intestinal juice is called succus entericus (secretion of cells of crypts of
Lieberkuhn mainly,
i. e„ goblet cells and brush-bordered epithelial cells).
Note: