Transcript What`s For Lunch? - Etiwanda E

What’s For Lunch?
Digestion as a Process
By: Megan Gardner
Time to Eat
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Digestion begins in the mouth
Bite your food
Chew food with your teeth
Saliva enters the mouth from the glands
in your mouth
 Swallow
Time to slide
 Food slides down the esophagus
 Muscles help push the food down the
esophagus (wave-like motion called
peristalsis)
 Mucus lines the esophagus to help the
food slide
Mush and Mash
 Food enters the stomach
 Digestive juices (acid) mixes with the
food.
 Stomach muscles mash and churn the
food.
 Food becomes a thick, soupy, liquid
(chyme)
Small (but longer)
Intestine
 Where most digestion takes place
 Villi absorb nutrients and bring them to
the bloodstream.
 Nutrients go to the rest of the body
through the bloodstream.
Large (but shorter)
Intestine
 Any undigested material enters the large
intestine (colon).
 Stays in here for 24-48 hours
 Takes absorbs any left over water or salt
 Food is then eliminated through the anus.
Fun Facts
 Carbohydrates are broken down by the
saliva
 Food stay in your stomach for 2-6 hours.
 Gravity helps push the food down.
Comprehension Questions
 Where does digestion begin?
 Where does your food go after you
swallow?
 What mixes with the food in the
stomach?
 Where does most digestion take place?
 What happens to the food once it leaves
the large intestine?
Works Cited
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California Department of Education
http://www.cde.ca.gov/re/pn/fd/documents/sci-stnd.pdf
Fifth grade science standards
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BBC
www.bbc.co.uk/.../ staying_digestion.shtml
Picture of a person eating (the beginning of digestion)
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NIDDK
digestive.niddk.nih.gov/ ddiseases/pubs/gas/
Picture of Digestive System
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JPButler
www.jpbutler.com
Picture of an elephant mouth
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Web MD
my.webmd.com/hw/health_ guide_atoz/hw141835.asp
Picture of the esophagus
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Libero
digilander.libero.it/ BodyMindCare/kapil/image
Picture of a stomach
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UCLAN
www.uclan.ac.uk/.../ scenario1GITlecture.htm
Diagram of the small intestine
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Sutter Health
cancer.sutterhealth.org/ health/healthinfo/ind...
Picture of the large intestine