C5 : Nutrition in humans

Question 1

5 processes of nutrition/digestive system

Answer 1

Ingestion, digestion, absorption, assimilation, egestion

Question 2

describe the buccal cavity and the mouth’s function in physical and chemical digestion

Answer 2

physical digestion
* teeth breaks large pieces of food into smaller pieces -> increases SA to volume ratio of the food for enzymes to act ln it more efficiently
* the tongue mixes the food with saliva and moves the food to the back of the mouth during swallowing

chemical digestion
* salivary glands that secrete saliva into the mouth
* salivary amylase digest