Human Nutrition (2)

Front

What is mechanical breakdown?

Back

The breakdown of food into smaller pieces without chemical change to the food molecules.

Front

What is the purpose of mechanical breakdown in digestion?

Back

To increase the surface area of food for the action of enzymes in chemical digestion.

Front

ingestion

Back

Taking in of substances e.g. food and

drink into the body

Front

absorption

Back

Movement of nutrients from the

intestines into the blood

Front

assimilation

Back

Uptake and use of nutrients by cells

Front

egestion

Back

Removal of undigested food from the

body as faeces

Front

chemical

digestion

Back

Break down of large insoluble

molecules into smaller soluble that can

be absorbed