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Digestive System Process Grid
Students will understand the digestive system works to make food usable for cell and works with the circulatory system.
http://kidshealth.org/kid/htbw/heart.html#
System Parts
Specific Functions
Interdependency
(How they work and what they do.)
(RELATIONSHIP TO OTHER SYSTEMS)
 mechanical digestion – chop,
grind, chew
Mouth

teeth

tongue
INTERESTING FACTS

blood vessels in the
mouth

Food stays in mouth about 2 minutes

blood vessels in the
esophagus

peristalsis is responsible for the rumbling
sounds in digestive tract

food stays here from 4-8 seconds; 1-2
seconds for soft food

stomach protected from HCl by mucus layer

food stays in stomach about 4 hours

becomes thick liquid
 chemical digestion –

Esophagus

connected to mouth

muscles push food down

peristalsis

Stomach
saliva - enzyme
chemical breakdown

enzymes

hydrochloric acid

blood vessels in
stomach
Pictures
Small
Intestine
Large
Intestine

breakdown process
finished here

blood vessels in small
intestine

thick stomach liquid
mixed with bile and other
enzymes

nutrients pass into
blood stream

Last 20 ft. passes through
walls into blood

water


parts of food not
digested
most water absorbed
into blood through
intestine walls

produces bile to break up
(chemical) fats in food

Bile stored in gall
bladder

produces enzymes

used in small intestine

stores bile made in liver

ejects bile into small
intestine

produces saliva for
chemical breakdown

helps in chewing ,
swallowing, & chemical
breakdown

takes ~ 12 hours for food to pass through

Leftover waste, urine and feces, go bye-bye

You can live without gall bladder
Additional Organs
 Liver
 Pancreas
 Gall Bladder
 Salivary
Glands