Gas exchange and breathing

• Biologie
• Middelbare school
• vwo
• Leerjaar 3

Gas exchange and breathing

Today's planning

At the end of the lesson...

• ... you will have checked your homework
  
• … you can explain what gas exchange is and how it works
• ... you can describe the different steps of  chest breathing and abdominal breathing

Before you continue...

... did you do your homework?

No? Do so first.

Yes? Please continue with this lesson.

00:19

The video does not mention the goal respiration. What is the main purpose of respiring?

00:46

The tiny blood vessels are called 'lung capillaries'. They are very thin. Explain why they should be very thin.

01:50

Oxygen needs to go to into the blood vessel and then into a red blood cell. How many membranes does it pass?

1. 1
2. 2
3. 3
4. 4

02:07

Diffusion of oxygen and carbondioxide is important. Explain why this is.

02:14

The video shows breathing out of oxygen. Is this correct? Explain your answer.

02:24

What is gas exchange?

Drag the boxes on the right to the correct place in the picture.

Alveolus

Oxygen

Red blood cell

Blood with little oxygen

Blood with lots of oxygen

Air

CO2

The end of this part

Continue with the following exercises in your book/on your laptop:

8.2 completely

SUMMARIZE 8.1 & 8.2