HUMAN RESPIRATORY SYSTEM

Clusters of tiny air sacs that allow the exchange of oxygen and carbon dioxide

• Pharynx
• Diaphragm
• Alveoli
• Lungs

This is a tube about 12cm long with c-shaped rings of cartilage to keep it open

• Nasal cavity
• Trachea
• Mouth Cavity
• Pharynx

Muscular structure that helps to expand and contract the lungs, forcing air in and out

• Pharynx
• Nasal cavity
• Alveoli
• Diaphragm

Smaller tubes within the lungs

• Bronchioles
• Bronchi
• Lungs
• Alveoli

This is a tube-like pasage used for food, liquid, and air

• Larynx
• Trachea
• Pharynx
• Lungs

Passage way that moistens the air and has hairs to trap dust and particles

• Nasal cavity
• Bronchi
• Mouth cavity
• Larynx

4. What will happen to our ribcage when we breath in?

• Ribcage moves out and upwards

• Ribcage moves in and downwards

• Ribcage moves out and downwards

5. What will happen to our thin sheet of muscle below our lungs when we breath out?

• Thin sheet of muscle moves downwards

• Thin sheet of muscle moves out

• Thin sheet of muscle moves upwards

6. When we breath in, the space in our chest become ______

• smaller

• bigger

• shorter

8. When we breath, we take in _____________ and give out ____________.

• take in carbon dioxide and gives out oxigen

• take in oxigen and gives out nitrogen

• take in oxigen and gives out carbon dioxide