Digestion Flashcards
1
Q
What is ingestion?
A
When food is taken into the mouth.
2
Q
Secretion
A
Water, buffers and enzymes are released from the GI-tract.
3
Q
What is mixing and propulsion?
A
Contraction and relaxation of the smooth muscle walls of the GI-tract.
4
Q
What is digestion?
A
The mechanical and chemical processes break down ingested food into smaller molecules.
5
Q
What is absorption?
A
Nutrients pass into blood and lymph and nourish cells and tissues.
6
Q
What is defecation?
A
Waste, ingestible substances, bacteria ad sloughed-off cell from the GI-tract which are not absorbed leave the body as faeces.
