Histology of Stomach
Stomach Fundus

Mucosa is thick and thrown into prominent folds called "rugae". It is lined by simple columnar epithelium, which invaginates into lamina propria to form gastric pits.

Lamina propria contain large number of tubular glands, which open into gastric pits. These glands are oriented perpendicular to the surface.

These tubular glands contain three types of cells :
  1. Zymogen / Chief / Peptic cells 
  2. Parietal / Oxyntic cells 
  3. Goblet cells
Muscularis mucosa - It is thin and made up of inner circular and outer longitudinal smooth muscle layers.

Muscularis externa - consists of inner "oblique", middle "circular", and outer "longitudinal" layers of smooth muscle.