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Anna Ward Ridge Road MS. Organs of the Digestive System. The Digestive System is t he body system which breaks down food so that cells can use it for energy. It includes: Esophagus Stomach Small Intestine Large Intestine. Do Now!!! Page 31.

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Anna ward ridge road ms

Anna Ward

Ridge Road MS

Organs of the Digestive System


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

Do Now!!! Page 31


The digestive system

http://www.brainpop.com/health/bodysystems/digestivesystem/preview.weml

The Digestive System


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

about the digestive system…


Mechanical vs chemical digestion

An Activity!!!

Please listen carefully and follow my directions.

Do not eat the bread!!!

Mechanical Vs. Chemical Digestion…



The mouth

Mechanical and Chemical Digestion begin here

The lipsandtongueposition the food for chewing and swallowing

Theteethbreak apart the food

Saliva (Spit) from glands softens the food

The mouth


Esophagus

EsoPhagus

ESOpHAGUS


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

Stomach


Special organs of the digestive system

Special Organs of the Digestive System


Liver

The LARGEST internal organ

Stores unneeded proteins

It FILTERS blood.

Has BILEthat helps break down fats

Liver


Gall bladder

Tiny pear-shaped sac connected to the LIVER

BILEfrom the liver is stored here and then secreted into the small intestine

Gall Bladder


Pancreas

Located between the stomach and intestine

Lowers acidity in the small intestine

Important for absorbing food substances

Pancreas


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!!!!!

Small intestine


Large intestine

Large Intestineis sometimes called the COLON

Water and some nutrients are absorbed

The remaining material is compacted and removed as waste (feces) through the rectum.

Large Intestine


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