What is digestion?

Why does our body need the chemicals in food?

What does chemicals in foods called?

What does digestive system consists of?

Types of digestion?

Mechanical digestion?

Examples of mechanical digestion

Chemical digestion?

Examples of chemical digestion.

Four types of teeth

Incisors?

Canines?

Premolars and molars?

What is an oesophagus?

What is the process of peristalsis?

What is an epiglottis?

What is the purpose of epiglottis?

What is a sphincter?

How does a sphincter works?

What is a bolus?