Nervous control of ruminal contraction

NERVOUS CONTROL OF RUMINANL CONTRACTIONS

  • Cyclical contractions of the first three compartments which begins early in life continue through out life without any interruption.
  • Cyclical contractions are disturbed during pathological conditions affecting firstly rumen (impaction, intestinal intussusceptions) resulting cessation of rhythmic spontaneous contractions.
  • Smooth muscle fibres of rumen receives sympathetic and parasympathetic (vagus) innervations which provide rhythmic propulsive motility.
  • Rumination is an indicator of good health because of all the  nervous pathways and neuromuscular functions of the stomach must be functioning well forexecution of  the complex rumination reflex. 
  • The ruminal stomach is supplied with an extensive network of afferent nerve fibres that carry information from in the stomach to the CNS. Tension receptors are more in reticulum and cranial sac.
  • Epithelial receptors are more in reticulum and cranial sac and pillars of rumen.
  • Mucosal receptors are rich in abomasum and duodenum and are sensitive to both mechanical and chemical stimuli.
Last modified: Friday, 3 June 2011, 9:14 AM