Transcript Digestive System

Fun Facts on Digestion
• Stomach growling??? – Intestines
contracting.
• Burping or a “little flatulence”??? –
trapped gas and air from bacteria.
• Every person eats @3lbs of food / day –
1095 lbs of food / year!!!!!
• Entire digestive system is 30 ft long!!!
• You produce 1 qt of saliva / day!!!
“Chewing your cud” – How many
stomachs does a cow have????
– 4 !!!!
What organ is attached to your large
intestines and has no known purpose???
Your appendix
Digestive System
Digestion – the chemical
and mechanical breaking
down of food into
something the cells can
use.
Kidshealth
Major Organs &
Functions
•
•
•
•
•
•
Mouth
Esophagus
Stomach
Small Intestines
Large Intestines / colon
Rectum & Anus
• Liver
• Gall Bladder
• Pancreas
Saltine
Crackers
• Epiglottis
– flap of cartilage
– closes trachea (windpipe) when swallowing
– food travels down esophagus
• Peristalsis
– involuntary muscle contractions to move food along
Esophagus - carries chewed food
to the stomach.
*Peristalsis – muscle
contractions that push the food
down the tube.
stomach - secrete HCl
(hydrochloric acid) &
pepsin to help with
chemical digestion.
Mechanical digestion also
takes place here with the
churning.
Liver - have over 500 functions!!!
- produces bile to help digestion fat.
gall bladder - storage
tank for the bile.
Villi – Found in small
intestines to absorb
nutrients and water.
large intestines /
colon.
Water is absorbed here
& enters the
bloodstream. The
remaining is prepared to
leave the body as
waste.
rectum and anus– a short tube and
opening where solid waste is stored
and eliminated from the body.
Interactive
Which type of digestion is the
following?
1. Chewing a saltine? 2. Saliva breaking the saltine down into molecules of
glucose? 3. Your tongue breaking pieces of a hamburger apart?
4. Pepsin (an enzyme) & HCl in your stomach breaking
the hamburger into amino acids?
Journey Thru the Digestive System Of a
Toddler
21 Minutes