Chemical vs. Mechanical Digestion
Mechanical Digestion
-takes place mainly in mouth, partially in stomach
Chemical Digestion
causes chemical change to food, such as making complex sugars and starches into glucose and turning particles called peptides into amino acids
Mechanical Digestion
causes physical change to food, making food into smaller pieces
Mechanical Digestion
chewing
Chemical Digestion
enzymes such as pepsin, trypsin and rennin and acid( hydrochloric )
Chemical Digestion
hydrolysis - water molecule added where bond is broken
Mechanical Digestion
mastication - chews food into smaller pieces
Mechanical Digestion
stomach - muscles churning
Chemical Digestion
takes place in small intestine and a little in the mouth and stomach
Mechanical Digestion
the breaking down of food physically through chewing and churning, making digestion easier
Chemical Digestion
the breaking down of the food through chemical compounds, making it possible for body to absorb nutrients
Chemical Digestion
uses chemical energy to digest
Mechanical Digestion
uses mechanical energy to digest
Chemical Digestion
acid and enzymes break down food further
Mechanical Digestion
-teeth, muscles in stomach and muscles in other parts of alimentary canal
Mechanical Digestion
Peristalsis - involuntary contraction- move food through esophagus and small intestines
