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Digestion organs - Coggle Diagram
Digestion organs
Mastication
Deglutation
pharynx
involuntary: food stimulates epithelial swallowing receptors (muscle contractions)
esophagus
involuntary: from esophagus to stomach
Secondary peristalsis: non healthy individual, failed transport/acid reflux
Primary peristalsis: excitatory motor neurons
Esophagus
Upper esophageal sphincter
striated muscle
Relaxed during swallowing
Esophageal body
relaxed during non-swallowing
low muscle excitability, no slow waves
Lower esophageal body
Tonically contracted
vagal and enteric reflex relaxes LES before food arrives
Stomach
Storage, mixing, and emptying
Motility gastric reservoir functions to accommodate food (storage) and maintain constant compressive forces on contents
Tonic contractions: excitatory motor neurons, decreases volume, increases intraluminal pressure
Relaxation: decreases in excitatory signal, increases in inhibitory signal, increases volume, decreases intraluminal pressure
5 more items...
High resting pressure, vagal and enteric reflex relaxes LES before food arrives
NO and VIP
Tongue
voluntary
reflex triggered by sights, smells, thoughts but can be voluntary
