Download Steps in Digestion

Steps in Digestion
1. Ingestion:
- Food is prepped for
digestion (chew it, add
water and enzymes).
- Peristalsis begins:
1. Ingestion
muscles contract to move
Food
food along.
particles
2. Digestion:
2. Digestion
- Physical digestion
(chemical
increases surface area of
breakdown)
food.
Nutrient
- Chemical digestion uses
molecules
enzymes to break down
complex macromolecules
3. Absorption
3. Absorption
Enters
- Nutrients (sugar, amino
cells
acids, nucleic acids, fatty
acids) move out of
4. Egestion
digestive system into
circulatory system.
Wastes Returned
4. Egestion
to Environment
- Waste is removed.
Food brought
in from
environment
The Organs of the Digestive System
Organs
Mouth
Esophagus
Stomach
Liver, gall bladder
Pancreas
Small Intestine
Large Intestine
Does
Food
Pass
Through
It?
What step(s) of
digestion does it help
with? (Ingestion,
Digestion, Absorption,
and/or Egestion)
How does it help in
digestion?