Digestion Flashcards
1
Q
7 stages of digestion
First 4
A
1 .Ingestion - mastication - food enters tract
2 .Propulsion - swallowing - involuntary peristalsis ( waves of muscular contraction)
3. Mechanical breakdown -materials crushed, enzymes attack the particles during chewing. Increases food surface area- mixes with digestive juices.
4 digestion- chemical breakdown of food into particles that can be absorbed from the lumen. Catabolic process.
Secretion- removal of water, acids, buffers, enzymes and salts from the epithelium and glandular organs of the tract.
2
Q
7 stages of digestion
SAME DIP
A
Secretion Absorption Mechanical processing( breakdown) Excretion Digestion Ingestion Propulsion
