消化系統(Digestive system)

1口腔Oral cavity
2咽食道Pharynx
3食道Esophagus
4胃Stomach
5小腸Small intestine
a 十二指腸Duodenum
b空腸Jejunum
c迴腸Ileum
6結腸Colon
a 升結腸Ascending colon
b橫結腸Transverse colon
c降結腸Descending colon
d乙狀結腸Sigmoid colon