RUMINANT STOMACH Flashcards
Largest forestomach compartment; primary site for microbial fermentation.
Rumen
Honeycomb-structured chamber; traps foreign objects and aids in regurgitation.
Reticulum
Ridges in the abomasum assisting with mixing and digestion.
Abomasal folds
Leaf-like chamber; absorbs water and filters ingesta.
Omasum
Glandular compartment; functions like the monogastric stomach.
Abomasum
Collective term for rumen, reticulum, and omasum; non-glandular compartments in ruminants.
Forestomachs
Functional unit of the rumen and reticulum; site of microbial fermentation and particle sorting.
Ruminoreticulum
Site where the esophagus enters the ruminant stomach.
Atrium ventriculi
Muscular groove directing milk from the esophagus to the abomasum in young ruminants.
Sulcus ruminoreticularis
Mucosal projections increasing absorptive surface area in the rumen.
Rumen papillae
Regurgitated bolus of partially digested food during rumination.
Cud
Muscular ridges separating internal sacs; aid in rumen contractions.
Rumen pillars
Lamellar folds in the omasum; grind ingesta and absorb water.
Omasal laminae
Internal ridge dividing glandular and non-glandular regions of equine stomach.
Margo plicatus
Reflex-activated channel bypassing forestomachs in young ruminants.
Esophageal groove
Non-glandular blind sac of the horse stomach; equivalent to rumen functionally.
Saccus cecus
Muscular projection at the pylorus in pigs; function unclear.
Torus pyloricus
