VAN 221: Veterinary Splanchnology and Applied Anatomy (1+1)

RUMINANT FORE STOMACH

(Click here to note the "Forensic histology")

• The mucosa of rumen, reticulum and omasum are aglandular
• Rumen (View image)
  • Shows mucosa, muscularis and serosa
  • The mucosa of rumen shows tongue shaped papillae
  • Epithelium is stratified squamous cornified type
  • There is no muscularis mucosa
  • Tunica muscularis is made up of inner circular and outer longitudinal layers of smooth muscle fibres
• Reticulum (View image)
  • The layers are as in rumen
  • The mucosa shows large and small folds
  • The larger ones show papillae on their sides
  • Larger folds show muscularis mucosa at their tips which is absent elsewhere
• Omasum (View image)
  • Large and small lamina studded with papillae are present. Muscularis mucosa is present
  • Large laminae also show circular layer of tunica muscularis