GENERAL HISTOLOGY

Detailed explanation-1: -The three sections of the small intestine and the order in which chime would pass through are: duodenum which connects to the stomach, jejunum and the ileum which attaches to the colon.

Detailed explanation-2: -Four-layered (mucosa, submucosa, muscularis mucosa, and serosa) organization of the digestive tract.

Detailed explanation-3: -The GI tract contains four layers: the innermost layer is the mucosa, underneath this is the submucosa, followed by the muscularis propria and finally, the outermost layer-the adventitia.

Detailed explanation-4: -It is divided into three parts: the duodenum, jejunum and ileum. The beginning portion of the small intestine (the duodenum) begins at the exit of the stomach (pylorus) and curves around the pancreas to end in the region of the left upper part of the abdominal cavity where it joins the jejunum.