Gr 9 NS Life Digestive System

What is digestion?

• The production of hormones

• The circulation of blood

• The breaking down of food for absorption

• The process of breathing

What are the two forms of digestion?

• Physical and Chemical

• Voluntary and Involuntary

• Internal and External

• Active and Passive

What is the primary function of the stomach in digestion?

• Secreting saliva

• Breaking down carbohydrates

• Mixing food with enzymes and digestive juices

• Absorption of nutrients

Which enzyme in saliva breaks down carbohydrates?

• Pepsin

• Amylase

• Lipase

• Trypsin

What is the role of hydrochloric acid in the stomach?

• To absorb nutrients

• To break down fats

• To create an acidic environment for enzyme function

• To neutralize food

What is the main function of the ileum?

• Secretion of enzymes

• Mixing food

• Absorption of nutrients

• Digestion of proteins

What is the role of bacteria in the large intestine?

• To produce hormones

• To aid in digestion and release vitamins

• To absorb water

• To break down fats

What is the first part of the small intestine called?

• Jejunum

• Cecum

• Duodenum

• Ileum

What is the process of moving food through the digestive system called?

• Absorption

• Assimilation

• Peristalsis

• Digestion

What does chemical digestion involve?

• Movement of food

• Absorption of nutrients

• Enzymatic breakdown of food

• Physical breakdown of food