2. The Digestive System

• Biologie
• Voortgezet speciaal onderwijs
• Leerroute 2

Welcome

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Rules

Respect

My-patience-is-running-thin-o-meter

Aims

- You can describe the function of digestion, digestive juices and enzymes.

- You can list parts of your dentition and name their functions.

- You can describe the function of peristalsis and how it works.

What is the primary function of proteins?

1. Protective
2. Reserve
3. Building Block
4. Fuel

What is the primary function of carbohydrates?

1. Protective
2. Reserve
3. Building Block
4. Fuel

Digestion

Why digestion?

Definitions

Nutrition: Nourishment / Food 

The process of providing or obtaining the food necessary for health and growth.

Digestion:

The conversion of nutrients that cannot pass through the wall of the gut into the bloodstream --> into digestion products that can be absorbed by the bloodstream.

Nutrition

Digestion

Mechanical

Chemical

Chewing

Enzymes

Helps speed up metabolism

Metabolism?

Catalyser

Peristalsis

Who can do a handstand?

Alternate contraction and relaxation of circular and longitudinal muscles in the wall of the entire intestinal tract.

What is the function of peristaltic movement?

1. To move the food pulp along
2. kneading/mixing it with digestive juices
3. To prevent vomiting
4. To digest fibre

Assignments 1, 2 & 5

4 (Summary)

Aims

- You can describe the function of digestion, digestive juices and enzymes.

- You can list parts of your dentition and name their functions.

- You can describe the function of peristalsis and how it works.

Enzymes?