Breathing

• It is essential that breathing continues to that oxygen is taken into the body, and carbon dioxide is removed.

• This is what happens in your body when you inhale:

• The muscles between your ribs contract, pulling your ribcage up and out.

• The diaphragm contracts and moves down.

• This increases the volume inside your chest, decreasing the pressure and allowing air to flow into your lungs.

Breathing out (exhaling)

• This is what happens in your body when you exhale:

  • The muscles between your ribs relax, moving the ribcage down and in.

  • The diaphragm relaxes and moves up.

  • This decreases the volume inside your chest, increasing the pressure and pushing air out of your lungs.

Lung volume