Digestion Definitions Flashcards
0
Q
Mastication
A
Mechanical digestion. The chewing of food. Breaks food down into smaller pieces which increases surface area.
1
Q
Ingestion
A
Solid food taken into the mouth
2
Q
Chemical digestion
A
This uses enzymes. Large insoluble molecules to small soluble molecules. For example proteins to amino acids.
3
Q
Absorption
A
Small food molecules from the ileum into blood
4
Q
Assimilation
A
Use of the small food molecules. For example amino acids are used to make protein.
5
Q
Egestion
A
Removal of undigested food from the body. For example cellulose
6
Q
Excretion
A
Removal from the body of waste products of chemical reactions such as co2 from respiration
7
Q
Peristalsis
A
the process by which food moves through the digestive system
