Breathing

Question 1

Describe what happens when you inhale

i.e. What happens to the intercoastal muscles, rib cage, diaphragm, Lung volume and air pressure

Answer 1

Intercoastal muscles contract
Ribcage moves upwards and outwards
Diaphragm contracts - pulling it downwards
Lung volume increases
Air pressure decreases

Question 2

Describe what happens when you exhale

i.e. What happens to your intercoastal muscles, rib cage, Diaphragm, Lung volume and air pressure

Answer 2

Intercoastal muscles relax
Ribcage gets pulled downwards
Diaphragm relaxes - moving back and upwards
Lung volume decreases
Air Pressure increases

Question 3

Define breathing

Answer 3

Air moving in and out of the lungs - inhalation and exhalation