Please enable JavaScript.
Coggle requires JavaScript to display documents.
Gastric innervation and control - Coggle Diagram
Gastric innervation and control
Gastric control phases
II Gastric
Food arrives in stomach
stretch and chemoreceptors > NS
Myenteric > muscle waves
Submucosal plexus > G cells, mucus, increase gastric juice production
III Intestinal
Chyme enters duodenum
Function: control rate of gastric emptying
Inhibitory controls: CCK, secretin, Enterogastric reflex > inhibit gastrin
I Cephalic
Parasympathetic NS - see/smell/taste > CNS > NX > submucosal plexus > gastric cells
Feedforward loop - prepares stomach tp receive food
Preparation phase
Gastric emptying controls - stomach to duodenum
Hormonal (duodenum)
CCK
GIP
secretin
Neural
Enterogastric reflex
In stomach
Distension
too much chyme > stretch recep >inhibit peristalsis
Emotion
stimulate or inhibit
Hypertonicity
osmolarity rise in duodenum >emptying inhibited
inhibit peristalsis
Pain
Inhibit motility and emptying
Acid
Acidic chyme > secretin
inhibit chief, parietal, peristalsis
Fat
stimulate CCK
inhibit chief, parietal, peristalsis
Small intestinal central reflexes
Gastroenteric reflex
Stimulate motility and secretion along entire SI
Gastroileal reflex
relax ileocecal valve
material pass to LI