digestion project part 5

Large intestine

The function of the large intestine is to absorb water from the remaining indigestible food matter,then

to release useless waste matter out of the body. It takes 32 hours to finish up the remaining digestion

process . The large intestine is about 1.5 meters long, shorter than the small intestine. It houses about 700

bacteria, producing large amounts of vitamins for absorption into blood. A mucus layer,mucosal barrier, protects the large

intestine from attacks from colonic commensal bacteria.

Parts of a large intestine : Ascending colon

:transverse colon

:descending colon

:sigmoid colon

:rectum

More parts of a large intestine: Cecum(The first part of the large intestine)

:taeniae coil( three bands of smooth muscle)

:haustra (budges caused by contraction of taeniae coil)

:epicloic appendages ( small fat accumulations on the viscera)

anus/rectum is just used for expelling waste matter from the large intestine.