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Motility types in GIT (Gastric Motility (Fundus and upper body relax…

- - - - Pyloric region
      - Duodenal region
- - - - slow propulsive movement
      - pressure at the pyloric end of small intestine is greater than at the distal end
      - occurs by the contraction of circular muscle
    - - major contractile activity of the small intestine
      - mixing movement involving contraction of circular smooth muscle
      - occurs due to the rhythmic contraction of the longitudinal muscle
      - contractile ring occur every few centimeter, dividing the small intestine into segments
  - - - the large intestine causes the contents to be continously mixed
    - - propels the contents of one segment of the large intestine into the next downstream segment
    - - involves involuntary reflexes and voluntary reflexes - evacuation of colonic content through anal canal
- - - - Esophangeal
        
        Involuntary Muscle movement
        
        Circular muscle fibres (above bolus) contract & relax (infront bolus)
        
        Known as peristalsis
        
        End of Esophagus
        
        Lower Esophangeal (Gastrophangeal) Spincter
        
        LES cntract to prevent regurgitating into esophagus
        
        2 more items...
        
        Shortening of tube by longitudinal muscle contraction
      - Involuntary phase
      - Food bolus stimulates Oropharynx
        
        Deglutition centre (in Medula Oblongata)
        
        Briefly inhibits respiratory centre
        
        Food bolus moves through Pharynx into Esophagus
        
        Elevation of Larynx
        
        Tight closure of vocal folds
    - - food is force to back of oral cavity