Human Nutrition (Main events in human nutrition) Flashcards
What are the four main processes in human nutrition?
Ingestion
Digestion
Absorption
Egestion
What is ingestion?
Ingestion is the taking of food into the digestive system
What is the taking of food into the digestive system?
Ingestion
When does ingestion happen?
When food is placed in the mouth
What is digestion?
The breakdown of food
What is the breakdown of food called?
Digestion
What are the two types of digestion?
Physical and chemical digestion
What is physical digestion?
The mechanical breakdown of food
What is the mechanical breakdown of food called?
Physical digestion
When does physical digestion take place?
When food is chewed or when food is churned in the stomach
What form of digestion takes place when food is chewed or churned in the stomach?
Physical digestion
How does physical digestion allow chemical digestion to take place more efficiently?
Physical digestion increases the surface area of food
What is chemical digestion?
The breakdown of food using enzymes
What is the breakdown of food using enzymes?
Chemical digestion
When does absorption occur?
When the digested food passes from the digestive system and enters into the blood
