Oesophagus
- Nerve plexus on it so need to be careful
- Through diaphragm T10
Stomach
Secretions:
| Region | Secretes | Motility |
|---|---|---|
| Lower oesophageal sphincter + cardia | mucus, HCO3- | * prevention of reflux * entry of food * regulation of belching |
| Fundus + body | H+, intrinstic factors, mucus, HCO3-, pepsinogens, lipase | * reservoir * tonic force during emptying |
| Antrum + pylorus | mucus, HCO3- | * mixing and grinding * regulation of emptying |
Gastric gland
| * G cell - gastrin secretion inhibited byluminal H+, causesacid secretion + mucosal growth * M cell - motalin * D cell - somatostatin (paracrine) inhibits gastrin, CCK*, secretin |
|---|
*CCK, cholecystokinin, inhibits gastric emptying
