Gastric motility and secretion

• Frequence of slow waves

  1. 3 > stomach
  2. 12 > duodenum
• Long chain fatty acids release CCK (I cells) [By acitvating afferent vagal sensory fibres] or Acids secretin (S cells) or irritants serotonin (EC cells) > delay gastric gastric emptying
• Delayed gastric emptying results from

  1. ENS
  2. Vagovagal reflex: Decreases fundic tone (NO and VIP ) and antral peristalsis while Increasing Pyloric constrictions and duodenul peristalsise