The large intestine, also called the large bowel, is the final part of the gastrointestinal tract. It consists of the cecum, colon, rectum, and anal canal. The large intestine absorbs water from wastes to create stool for storage and then expulsion from the body. It plays an important role in reabsorption of water, conversion of waste, and housing beneficial bacteria.

1. LARGE INTESTINE
AND RECTUM
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2. DIGESTIVE SYSTEM
 It consists of gastrointestinal tract
consisting organs from mouth to
anus.
 Organs involved in digestion:
 Mouth
 Esophagus
 Stomach
 Small Intestine
 Large Intestine
 Rectum
 Accessory digestive organs: liver,
gallbladder, pancreas
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3. LARGE INTESTINE
 Last part of the gastrointestinal
tract
 ANOTHER NAME: Large bowel
 LOCATION: inferior to stomach
 LENGTH: 1.5 meters
 WIDTH: 7.5 cm
 Combination of:
caecum
colon
rectum
anal canal
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4. FUNCTIONS
 Reabsorption of water & mineral ions like sodium and
chloride
 Conversion of intestinal contents into feces
 Absorption of important vitamins produced by bacteria
 Storage of fecal material before defecation.
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5. PARTS:
1. CAECUM:
- pouch like region
 LOCATION: between
ascending colon and appendix
 FUNCTION: receives material
coming from the ileum.
contains undigested water
and vitamins
APPENDIX : Also called
vermiform appendix
Is a slender, hollow
appendage about 9 cm (3.6 in.)
long
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6.  APPENDIX: Also called vermiform appendix
 Appearance: slender, hollow appendage
 Length: average 9cm
 Function: storehouse for good bacteria
2. Colon:
 Length: about 5 feet
 Diameter: 3 inches
 Function: absorbs water from wastes, creating stool
 Divisions:
▪ descending colon
▪ ascending colon
▪ transverse colon
▪ sigmoid colon
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7. PARTS OF COLON
 Ascending Colon
about 8 inches
 Begins at superior border of cecum
 Function: carries feces from the cecum
 Transverse Colon
about 18 inches
 Function:
▪ bacteria further breaks down the food, process called
fermentation.
▪ water and nutrients are removed, and feces form
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8.  Descending Colon
less than 12 inches
 Function: store the remains of digested food that will be
emptied into the rectum
 Sigmoid Colon
 S-shaped segment
 about 18 inches long
 Lies posterior to urinary bladder
 Stores fecal wastes until they are ready to leave the body.
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10. RECTUM:
 Last part of the large
intestine
 Continuation of sigmoid
colon and connects to anus
 LENGTH: 10 to 15 cm
 Feces are temporarily stored
here and rejected through
anus
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11. THANK YOU
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