1
parotid gland
2
mouth / oral cavity
3
sublingual gland
4
pharynx
5
submandibular gland
6
esophagus
7
liver
8
stomach
9
gallbladder
10
duodenum
11
transverse colon
12
jejunum
13
pancreas
14
descending colon
15
ascending colon
16
ileum
17
cecum
18
appendix
19
sigmoid colon
20
rectum
21
anus