The large intestine, also called the colon, is the final part of the digestive system before waste is excreted. It is around 6 feet long and runs along the lower right side of the abdominal cavity. The colon has four main parts and absorbs water from food waste before it is passed as solid stool and stored in the rectum until excretion. The lining of the colon houses many bacteria that aid in digestion and vitamin production.

1. Created by: Kristen Benish,
Anastacia Arabie, Gloria Lopez
And Victoria Herbin
Dr. Glothfelty
A&P 1 AM Class

2. Large Intestine
The shape and place:
The colon is shaped like an U. The colon (large
intestine) is housed within the abdominal cavity. It
starts in the lower right quarter of the abdominal cavity,
it is in the waist area. The colon runs along the right
By Victoria Herbin side of the body. It reaches just below the liver.
Wiki.answersw.com

3. The Part of the colon
The function and purpose:
The colon is also called the large
intestine is a 6ft muscular tube.
This tube is connected to the
small intestine. There are four
main parts. They are: cecum,
ascending colon, transverse
colon, descending colon, and the
sigmoid colon which is all
connected to the rectum.

4. The Function Of The Colon (Large
Intestine)
The large intestine is responsible for
processing waste so that emptying the
bowels. Waste that is left over from
digestive process it passes through the
colon by peristalsis. First it is in a liquid
state and then ultimately it comes to a
solid form. The stool passes through the
colon, and then the water is removed.
Then the stool is stored in the sigmoid
colon until it becomes a mass movement.
It then empties into the rectum once or
twice a day. When the descending colon is
full with stool or feces it then empties all of
its contents in to the rectum. That is where

5. • The Large Intestine is the
second to last part of the
digestive system, the final
stage of the alimentary canal
is the anus. The function is to
absorb water from the
remaining indigestible food
By: Anastacia matter, and then to pass
Arabie useless waste material from
www.news- the body. The Large Intestine
medical.net
takes 32 hours to finish up
the remaining process of the
digestive system. Food is not
broken down any further in
this stage of digestion.

6. • The Large Intestine is simply
there to absorb vitamins that
are created by the bacteria
inhabiting the colon. It also
absorbs water and compacts
feces, and stores fecal
matter in the rectum. The
Large Intestine is wider than
the small intestine, and the
longitudinal layer of the
muscularis is a 3 strap like
structures known as the
taeniae coli, each are about
5mm wide. The wall of the
Colon is lined with simple
columnar epithelium.

7. • . The Colon houses over 700 • These bacteria also produce
species of bacteria that perform large amounts of
a variety of functions. vitamins, especially vitamin K
Undigested polysaccharides and Biotin (a B vitamin), for
(fiber) are metabolized to short- absorption into the blood.
chain fatty acids by bacteria in Although this source of
the large intestine and vitamins generally provides
absorbed by passive diffusion. only a small part of the daily
The bicarbonate the large requirement, it makes a
intestine secretes helps to significant contribution when
neutralize the increased acidity dietary vitamin intake is low.
resulting from the formation of The most prevalent bacteria
these fatty acids. are the bacteroides, which
have been implicated in the
initiation of colitis and colon
cancer. Bifidobacteria are also
abundant, and are often
described as 'friendly bacteria'.

8. • Parts of the large intestine • Locations along the colon
are: are:
• Cecum – the first part of the • The ascending colon
large intestine • The right colic flexure
• Taeniae coli – three bands of (hepatic)
smooth muscle • The transverse colon
• Haustra – bulges caused by • The transverse mesocolon
contraction of taeniae coli • The left colic flexure
• Epiploic appendages – small (splenic)
fat accumulations on the • The descending colon
viscera
• The sigmoid colon – the v-
shaped region of the large
intestine

9. The rectum is a straight chamber that
is 8-inches long that connects to the
colon to the anus. The job of the
rectum is to receive stool from the
colon to let the person know that there
is a stool to be evacuated. When
By: Kristen
anything such as gas or stool comes
Benish into the rectum it sends a message to
http://www.cchs.net/health/healt
h-
the brain, then decides if the rectal
info/docs/1600/1699.asp?index
=7041
contents can be released the
sphincters relax and the rectum then
contracts, disposing its feces. The
spinal cord regulates the nerve
impulses that initiate the reflexive
contractions of the rectum that result in

10. The walls of the rectum is smooth
and flexible allowing it to expand
to accommodate collected fecal
materials. The rectum is also a
frequent site of vulnerable cancer.
The rectum is a muscular ring that
is at the end of the large intestine.
The rectum also acts as a
temporary storage site for fecal
matter before it is eliminated from
the body. The food we eat is then
broken down and nutrients are
absorbed in the stomach. Fecal
matter is made up of digestive
juices, bacteria, and fiber
continues to move into the
rectum. The rectum holds the
feces until you push it out of your
body.

11. • The anus controls the
expulsion of the feces. The
flow of feces through the
anus is controlled by the
By: Gloria Lopez
www.webmd.com anal sphincter muscle. The
internal and external
sphincter muscle relax,
allowing the feces to be
passed by muscles and
pulling the anus up over the
exiting feces.

12. • Feces is temporarily
stored in the rectum and
expelled from the body
via the anus. An anal
fissure is a tear or split
in the lining of the anus
{anal mucosa}. The
symptoms and signs
include pain when
passing a bowel motion
and bright red blood
from the anus.

13. • The problem is common • Around half of cases
in children younger than heal by themselves with
one year, and affects proper self-care and
around eight out of ten avoidance of
babies. A person’s constipation. However
susceptibility to anal healing can be a
fissures tend to decline problem if the pressure
with age. Common of passing bowel motion
causes in adults include constantly reopens the
constipation and trauma fissure. Treatment
to the anus {such as options include surgery.
difficult childbirth}.

14. • Anal pain
• Pain when passing a motion and for some time afterward
• Bright red blood from the anus
• Blood on the surface of the stool
• Blood smears on the toilet paper