- The longest
part of the large intestine (a tube-like organ connected to
the small intestine at one end and the anus at the other).
The colon removes water and some nutrients and electrolytes
from partially digested food. The remaining material, solid
waste called stool, moves through the colon, is stored in
the rectum, and leaves the body through the anus. The colon
is part of the digestive system.