DIGESTIVE SYSTEM

The four systems involved in nutrition are

• digestive, excretory, respiratory and nervous

• digestive, circulatory, respiratory and endocrine

• digestive, respiratory, circulatory and excretory

• digestive, excretory, locomotor and endocrine

The digestive system is formed by

• gastrointestinal tract and accessory glands

• stomach and intestines

• gastrointestinal tract and liver

• mouth, stomach and small intestines

Write the main accessory glands

this type of digestion uses digestive enzymes

• mechanical digestion

• chemical digestion

Chewing is a mechanical process in which we use

• stomach

• teeth

• oesophagus

• duodenum