The pyloric canal is the narrow final 2-3 cm of the stomach, between the pyloric antrum and the pyloric sphincter. It funnels partly digested food into the duodenum.
| Location | Right of the midline at about L1 (transpyloric plane), between the pyloric antrum and the pylorus |
|---|---|
| Parts |
|
| Nerve Supply | Vagus nerve; Coeliac plexus (sympathetic) |
| Blood Supply | Right gastric artery; Right gastro-omental artery |
| Venous drainage |
|
| Lymphatic drainage |
|
Squeezes and meters small amounts of chyme into the duodenum.
In infantile hypertrophic pyloric stenosis the muscle thickens, causing projectile vomiting in babies a few weeks old, treated by pyloromyotomy. Scarring from ulcers in adults can narrow the canal and cause gastric outlet obstruction.
Thickened pyloric muscle causing forceful vomiting in young infants.
Narrowing of the pyloric region by ulcer scarring or tumour.
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