Respiration Flashcards
What is the correct passage of air?
- Nose
- Pharynx
- Larynx
- Trachea
- Bronchi
- Bronchioles
- Alveoli
Do the muscles contract or relax during inspiration?
Contract
Do the muscles contract or relax during expiration at rest?
Relax
What parts of the body are used during inspiration at rest? (2)
External intercostal muscles
Diaphragm
What parts of your body are used during inspiration at exercise?
Pectorals Sternocleidomastoid Scalene Diaphragm External intercostal muscles
What parts of your body are used during expiration at rest?(2)
Diaphragm
External intercostal muscles
What parts of the body are used during inspiration during exercise?
Pectorals Sternocleidomastoid Scalenes Diaphragm External intercostal muscles
What is the function of haemoglobin?
To combine oxygen to transport it to working muscles
What features of alveoli help gaseous exchange?
Thin surface area
Moist thin cell walls (one cell thick)
What is tidal volume?
Volume breathed in or out per breath?
What is residual volume?
The amount of air which remains in the lungs after expiration to maintain its shape
Define A-V02 difference
The difference in oxygen content in arterial and venous blood
(How much oxygen is extracted and used by the muscles)
