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==Process==
==Process==
[[Image:Diagram of eructation.jpg|thumb|right|150px|Diagram of Eructation - Copyright RVC 2008]]
*Ruminal contractions (no reticular contribution)
*Ruminal contractions (no reticular contribution)
*Contractions spread caudally to cranially over the rumen
*Contractions spread caudally to cranially over the rumen
*Ruminal gas is forced to wards the cranial cardiac area where it is aspirated into the [[Oesophagus - Anatomy & Physiology|oesophagus]]
*Ruminal gas is forced towards the cranial cardiac area where it is aspirated into the [[Oesophagus - Anatomy & Physiology|oesophagus]]
*The gases are moved orally by an antiperistaltic wave passing through the relaxed pharyngoesophageal sphincter into the pharynx
*The gases are moved orally by an antiperistaltic wave passing through the relaxed pharyngoesophageal sphincter into the pharynx