8.2 Breathing

• Biologie
• Middelbare school
• vwo
• Leerjaar 3

BS 8.2 Breathing

You can state the differences between inhaled air and exhaled air.

You can describe how inhalation and exhalation are achieved.

Gas exchange =

absorption and release of oxygen and carbon dioxide through the alveoli

moisture the alveolus

High oxygen concentration.

High carbon dioxide concentration.

one cell layer thick

cappilaries around the alveoli

oxygen goes into the red blood cells

oCarbon dioxide goes into the air

Red blood cell transport gasses

Alveolus/Alveoli

Alveoli

Very thin cell layers (± 1 cell thick)

Gases can flow freely from blood to alveoli and back

Mechanical breathing

Two types:

- Chest breathing

- Abdominal breathing

Chest breathing

Abdominal breathing

 BS 8.2

Start the assignments of 8.1.

ALL assignments

8.2

Exercises 1-10

Homework next lesson: Finishing 8.1