1.2 The Respiratory System Flashcards
What muscles are used for inspiration during rest?
The diaphragm and the external intercostal muscles
What muscles are used for inspiration during exercise?
Diaphragm, external intercostals, sternocleidomastoid, scalenes, pectoralis minor
What muscles are used for expiration during rest?
Passive: diaphragm and external intercostals just relax
What muscles are used for expiration during exercise?
Internal intercostals, Abdominals
What is Tidal volume and how does it change during exercise?
The volume of air breathed in or out per breath
It increases during exercise
What is inspiratory reserve volume and how does it change during exercise?
The volume of air that can be forcibly inspired after a normal breath
It decreases during exercise
What is expiratory reserve volume and how does it change during exercise?
The volume of air that can be forcibly expired after a normal breath
It slightly decreases during exercise
What is residual volume and how does it change during exercise?
The volume of air that remains in the lungs after maximum expiration
It remains the same during exercise
What is minute ventilation and how does it change during exercise?
The volume of air breathed in or out per minute
There is a big increase during exercise
