Editing Stomach (section)

== '''Divisions''' ==

* '''Cardia''' - most proximal region,     attaches to the oesophagus
** Junctional mucosa - mucus      cells and glands, usually <2cm in length
** Most fixed location
* '''Fundus''' - superior-most part, above     the level of entry of the left side of oesophagus, meaning the fundus is     usually 2-5cm in height
** Floppy and distensible
** Anteriorly covered in      peritoneum
** Angle of His - anatomic      angle formed by the fundus with the left margin of the oesophagus
** Parietal cells and chief      cells
* '''Body''' - largest part - sometimes     called 'corpus'
** Bounded by lesser and      greater curvatures, as far down as incisura on lesser curvature; no fixed      point on greater curvature where this ends, but maybe the 'sump'
** Angularis incisura - where      the lesser curvature abruptly angles to the right, and vessels and nerves      of lesser omentum are seen to fan out as the 'crow's foot'
** Parietal cells and chief      cells
* '''Antrum''' - between angularis incisura     and pylorus (I think that division is at the pre-pyloric vein?)
** Gastrin-producing cells
** Thickest muscle layer
* '''Pylorus'''
** Proximal and distal pyloric      sphincters, with a sheet of circular muscle between them. They are fused      on the lesser curvature side with a muscular knob known as the pyloric      torus.
*** Distal sphincter is quite       distinct, at the narrowest point of the gastroduodenal junction
*** Proximal sphincter is less       prominent, occurring over a longer section of greater curvature
*** Marked by pre-pyloric vein       (of Mayo)