Changes

[[Image:Abomasum Histology Sheep.jpg|thumb|right|150px|Abomasum Histology (Sheep) - Copyright RVC 2008]]

[[Image:Abomasum Histology Sheep.jpg|thumb|right|150px|Abomasum Histology (Sheep) - Copyright RVC 2008]]

*Simple columnar epithelium

The abomasum has a simple columnar epithelium. There are 3 layers of '''tunica muscularis'''- inner oblique, middle circular and outer longitudinal. The '''lamina muscularis''' is thicker and has 3 separate layers.

Gastric glands are present in the '''lamina propria''' of the mucosal layer in the pyloric region. (lighter part) The abomasum is heavily coated by mucous for protection. The submucosa contains loose connective tissue, many blood vessels and unilocular adipocytes. The coiled glands in the lamina propria open into deep gastric pits. The inner mucosa is pink. '''Rugae''' are present in the pyloric region and a '''torus''' (large swelling) is present at the pyloric passage to narrow the lumen. The dark mucosa of the fundus and body contains peptic glands.

 

 

*Gastric glands in lamina propria of mucosal layer in pyloric region (lighter part)

 

*Heavily coated by mucous for protection

 

*Submucosa contains loose connective tissue, many blood vessels and unilocular adipocytes

 

 

*Coiled glands in lamina propria opening into gastric pits

 

*Pink inner mucosa

 

*Rugae are present in the pyloric region

 

*Torus (large swelling) is present at the pyloric passage to narrow the lumen

 

*Dark mucosa of fundus and body contain peptic glands

==Species Differences==

==Species Differences==