digestion!
TRANSCRIPT
DIGESTION!
II. Digestion
A. _____________________– Physically breaking down food.
B. _____________________ - uses chemical reactions to break down food.
MECHANICAL DIGESTION
CHEMICAL DIGESTION
Mechanical Digestion
Chemical Digestion
Chemical Digestion
Chemical Digestion
Chemical Digestion
Chemical Digestion
Chemical Digestion
Chemical Digestion
Chemical Digestion
Chemical Digestion
Chemical Digestion
Chemical Digestion
Chemical Digestion
Chemical Digestion
Chemical Digestion
Chemical Digestion
Chemical Digestion
Chemical Digestion
Chemical Digestion
Chemical Digestion
Chemical Digestion
Chemical Digestion
Chemical Digestion
Humans use HYDROCHLORIC ACID to aid in their chemical digestion
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C. Steps in Digestion
1. ________________: Both mechanical and chemical digestion
Mouth
Digestion Begins in the Mouth
Food goes DOWN the Esophagus
Peristalsis – contracting of muscles to push food throughout a body
3. __________________ - Both mechanical and chemical digestion
Stomach
Food ends up in the stomach
Stomach
The stomach is lined with mucus. The mucus protects the smooth muscles
from HYDROCHLORIC ACID, a chemical that breaks down food.
Ulcers
4. Small Intestine – chemical digestion - ___________ long
a. ________ - finger like projections
b. Absorption takes place
6 meters
VILLI
Villi in Small Intestine
Small Intestine
MORE SURFACE AREA = MORE ABSORPTION
5. _____________ - Largest organ – chemical factory
a. _____________ - stores bile
b. Bile breaks down fats into smaller pieces
Liver
Gall Bladder
LIVER!
Liver – Largest Organ – Chemical Factory – Produces BILE
Gall Bladder
Gall Bladder – Stores BileThe bile breaks down fats into smaller
pieces.
6. _____________ - breaks down starches, proteins and fats
Pancreas
The pancreas produces insulin. A hormone that helps digest sugars.
Diabetes
7. __________________________ - 1 ½ meters long
a. absorption of water
Large Intestine
LIVER
ESOPHAGUS
STOMACH
PANCREAS
GALL
BLADDERLARGE
INTESTINE
SMALLINTESTINE