9.2 Well organized

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Slide 1: Tekstslide
BiologieMiddelbare schoolvmbo bLeerjaar 2

In deze les zitten 22 slides, met interactieve quizzen, tekstslides en 5 videos.

time-iconLesduur is: 45 min

Onderdelen in deze les

Slide 1 - Tekstslide

9.2 Well organized

Slide 2 - Tekstslide

Learning objectives
  •     You will learn how the number of substances in your blood is kept at a constant level.

  •     You will learn about the tasks of your liver and your kidneys.

Slide 3 - Tekstslide

What waste products are produced during respiration?

Slide 4 - Open vraag

How does your body get rid of waste products?

Slide 5 - Open vraag

Execretory organs
Excretion = to get excess, unnecessary, and toxic substances from your blood and remove it from your body

Execretory organs = lungs, liver, kidneys, skin

Slide 6 - Tekstslide

How come there is always enough glucose in your blood?
Glucose = fuel for your body

Glucose levels in your blood are regulated by:
- Insulin
- Glucagon

These hormones are produced in the

Slide 7 - Tekstslide

Slide 8 - Tekstslide

Slide 9 - Tekstslide

Slide 10 - Tekstslide

Slide 11 - Video

Slide 12 - Video

Slide 13 - Video

Diabetes type 1 : patients of whom the insulin producing pancreas cells are damaged. 

Diabetes type 2:  body cells have become resistant to insulin; the hormone does not work properly anymore. 
- often diagnosed with overweight people who hardly exercise.

Result of both types: Blood glucose levels stay too high

Why aren't there any insulin pills?
Insulin is a protein

Slide 14 - Tekstslide

Measuring blood glucose levels
Too low: eat or drink something that contains glucose.

Too high: inject themselves using an insulin pen (or they carry an insulin pump).

Slide 15 - Tekstslide

Slide 16 - Video

Slide 17 - Tekstslide

Build-up of bile and cholesterol
of toxic substances (medicines, alcohol..) and amino acids
of vitamins A and D, iron from hemoglobin
and glycogen
of bilirubin (from red blood cells, broken down in the spleen), urea (product from breaking down amino acids) and converted toxic substances

Hepatic artery =
oxygen supply
Portal vein =
supply of nutrients

Slide 18 - Tekstslide

Filter waste products from the blood

  •     substances from the liver (from breaking down medicines or urea)
  •     excess substances (salt, vitamin)
  •     unnecessary substances (such as dyes)

Slide 19 - Tekstslide

Renal cortex filters waste products from the blood
Kidney medulla
collects waste products and excess water (urine)

Slide 20 - Tekstslide

Slide 21 - Video

8 - 15 en 18 - 20

Slide 22 - Tekstslide