2.3 - Eating disorders and 2.4 - The digestive system

Today's lesson
1. Discuss HW questions
2. Eating disorders
3. Begin the Digestive System
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Slide 1: Tekstslide
BiologieMiddelbare schoolvwoLeerjaar 2

In deze les zitten 14 slides, met interactieve quizzen, tekstslides en 1 video.

Onderdelen in deze les

Today's lesson
1. Discuss HW questions
2. Eating disorders
3. Begin the Digestive System

Slide 1 - Tekstslide

Eating disorders
Anorexia nervosa:  lose extreme amounts of weight
Bulimia nervosa:  vomit to get rid of the food, use large amounts of laxatives
Binge eating disorder: moments of eating a lot 

Slide 2 - Tekstslide

Slide 3 - Video

2.2 The digestive system

Slide 4 - Tekstslide

2.2 The digestive system
watch these clips and take notes watching them!

Slide 5 - Tekstslide

1
2
3
4
5
6
7
8

heart

large intestine

small intestine

stomach

lung

liver

brain

kidney

Slide 6 - Sleepvraag

Digestion
Digestion: Breakdown of food molecules into small food molecules 

When food is digested it is absorbed  

Slide 7 - Tekstslide

Big vs. Small
Big molecules -> Insoluble can not get through the gut wall

Small molecules -> Soluble can get through the gut wall

Slide 8 - Tekstslide

Fases of digestion. Put them in the right order.
1
2
3
4
digestion
ingestion
absorption
egestion

Slide 9 - Sleepvraag

FASES OF DIGESTION:
  • INGESTION
  • CHEMICAL AND MECHANICAL DIGESTION
  • ABSORPTION
  • EGESTION

Slide 10 - Tekstslide

CHEMICAL DIGESTION:
  • BREAKING THE FOOD INTO EVEN SMALLER MOLECULES.
  • USING ENZYMES TO BREAK DOWN THE FOOD MOLECULES. 

Slide 11 - Tekstslide

Chemical digestion
Enzymes: Important chemicals

Slide 12 - Tekstslide

Down the tube!
Oesophagus
Peristalsis: moving food down your oesaphagus (gullet)

Slide 13 - Tekstslide

Work
Make sure you know all the details of the digestive tract

Draw the organs of the digestive system
  • label the parts
  • add the functions

Slide 14 - Tekstslide