Sigmoid colon
Colon sigmoideum
DigestiveOrgansPelvis
- What it is
- S-shaped loop on its own mesentery (sigmoid mesocolon) from the pelvic brim to the rectum in front of the third sacral vertebra.
- Function
- Stores faeces until defecation.
- Size
- About 40 cm long (very variable) and 3-4 cm wide.
- Clinical note
- Its long mobile mesentery lets it twist (sigmoid volvulus), and it is the commonest site of diverticulitis.