The colon can be divided into four parts, which are as follows:
Ascending Colon: This part is about 15 cm long and goes upwards from near appendix.
Transverse Colon: This part is about 50 cm long and is almost horizontal.
Descending Colon: This part is about 25 cm long and goes downwards.
Sigmoid Colon: This part is about 40 cm long and is somewhat S-shaped.