1.3 Like a pair of bellows

• Biologie
• Middelbare school
• havo
• Leerjaar 1

Why is it more healthy to breathe through your nose?

Put the organs in the correct order

Air enters the body

Gas exchange

Nasal cavity

Alveoli

Pharynx

Larynx

Bronchi

Bronchioles

Trachea

Which of the following processes do not take place in the alveoli?

1. Filtering the air
2. Gas exchange
3. Respiration
4. Diffusion

Finish the sentence:
'Gas exchange ...'

The process where food is burnt to get usable energy is called ...

+

+

->

Put the molecules/ words in the correct order for the process called respiration. 

This process takes place in the ...

Glucose

CO₂

O₂

H₂O

mitochondria

chloroplasts

Which process is shown in the picture?

1. Diffusion
2. Osmosis
3. Gas exchange
4. Respiration

Which process is shown in the picture?

1. Diffusion
2. Osmosis
3. Gas exchange
4. Respiration

Which process is shown in the picture?

1. Diffusion
2. Osmosis
3. Gas exchange
4. Respiration

EXPLANATION.

BREATHING & LUNG VOLUME

EXPLANATION.

BREATHING & LUNG VOLUME

TASK. Copy & finish the text. 

When you inhale the diaphragm muscle
contracts / relaxes . This pulls the diaphragm upwards / downwards . The intercostals relax / contract and pull the ribcage upwards / downwards . This increases / decreases the volume inside your rib cage. The air now rushes into / out of the lungs. This happens because the air pressure in the lungs is lower / higher than the air pressure outside the body.

DONE ? Study 1.3 Like a pair of bellows