Organs of the Digestive System
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Transcript of Organs of the Digestive System
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ORGANS OF THE DIGESTIVE SYSTEM
Anna WardRidge Road MS
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DO NOW!!! PAGE 31 The Digestive System is the body
system which breaks down food so that cells can use it for energy. It includes:
Esophagus Stomach Small Intestine Large Intestine
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THE DIGESTIVE SYSTEM http://
www.brainpop.com/health/bodysystems/digestivesystem/preview.weml
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ABOUT THE DIGESTIVE SYSTEM… DIGESTION is the
process of breaking down food into usable materials The DIGESTIVE SYSTEM
transforms the energy and materials in food to forms your body can use.
Food breaks down both MECHANICALLY and CHEMICALLY
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MECHANICAL VS. CHEMICAL DIGESTION… An Activity!!!
Please listen carefully and follow my directions.
Do not eat the bread!!!
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MAJOR ORGANS OF THE DIGESTIVE SYSTEM
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THE MOUTH Mechanical and
Chemical Digestion begin here
The lips and tongue position the food for chewing and swallowing
The teeth break apart the food
Saliva (Spit) from glands softens the food
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ESOPHAGUS After you swallow, the tongue pushes food
into your throat The tube that connects your mouth to your
stomach is your
The esophagus transports food from the mouth to the stomach
Water = 2 seconds Solid food = 8 seconds
ESOPHAGUS
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STOMACH Smooth muscle in
the STOMACH continue to mix and mash food
More chemicals are added to break down food INCLUDES A VERY
STRONG ACID Stomach is lined with
mucus to protect it
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SPECIAL ORGANS OF THE DIGESTIVE SYSTEM
Other Organs are Important too!!!
Liver
Gallbladder
Pancreas
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LIVER The LARGEST internal
organ
Stores unneeded proteins
It FILTERS blood.
Has BILE that helps break down fats
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GALL BLADDER
Tiny pear-shaped sac connected to the LIVER
BILE from the liver is stored here and then secreted into the small intestine
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PANCREAS Located between
the stomach and intestine
Lowers acidity in the small intestine
Important for absorbing food substances
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SMALL INTESTINE Food moves from the stomach to the
small intestine Food goes through chemical
digestion in the small intestine Villa in the small intestine absorb the nutrients The average length of an adult is about 23 feet!!!!!
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LARGE INTESTINE Large Intestine is
sometimes called the COLON
Water and some nutrients are absorbed
The remaining material is compacted and removed as waste (feces) through the rectum.