Gastric Gland:

Human Gastric  Gland:

The  deep tubular  glands of the stomach wall are called  gastric  gland .Collectively  the  secretion  of the  gastric glands is  called  gastric juice. Approxirnately  2 liters  of gastric  juice are secreted  each  day.  There arc  4 kinds off cells  found  in the  gland.  Each  type  of cell produces  a specific secretion  which  are as.

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i.  Oxyntic  cell  (:Parietal  cell): Produces  Hydrochloric

acid  (HCl):

Function:

a. It  is  a strclng  bacteriocide  and kills bacteria.

b.  Converts  inactive  pepsinogen  into active  pepsin.

c.  Denatures  proteins  and  helps  to soften tough   connective  tissue  in  meat.

ii.  Mucous cells:  Secretes  mucus.

Fuction:  Mucus  protects  the stomach  lining  from  the digestive action  of its own secretion  and HCl.

iii. Argentaffine cells:  Secretes  gastric  intrinsic  factor.

Function: Helps  in  the absorption  of vitamin  B12.

iv.  Chief cells  (also  called  zymogen  cells,  peptic  cells): These  cells  secrete pepsinogen.  Hydrochloric  acid converts  pepsinogen  into  active  pepsin. Pepsin then helps in  digestion.