Inspiration is
active
Inspiration diaphragm
contracts with more force
inspiration external intercostal
contract with more force
Inspiration sternocleidomastoid
contracts
Inspiration Scalenes/Pectoralis minor
contract
Inspiration ribs move
further up and out
Inspiration volume thoracic cavity
increases further
Inspiration lung air pressure
decreases further
Expiration is
active
Expiration diaphragm
relaxes
Expiration external intercostals
relaxes
Expiration internal intercostals
contract
Expiration Rectus-abdominus/Obliques
contract
Expiration ribs
pulled down and in quicker
Expiration volume of thoracic cavity
decreases quicker
Expiration lung air pressure
increases quicker