The stomach is located in the upper left portion of the abdominal cavity and has three major parts. Name these three parts.

(N/A) The human stomach is a $J$-shaped muscular organ located in the upper left portion of the abdominal cavity. It consists of three major parts:
$1$. Cardiac portion: Into which the oesophagus opens.
$2$. Fundus region: Which is typically filled with air or gas.
$3$. Pyloric portion: Which opens into the first part of the small intestine (duodenum).