Flashcards in The Mexhanics Of Breathing Deck (13):
What happens during inspiration?
The muscles contract
This moves the ribcage and sternum up and out
This increases the volume of the thoracic cavity
This reduces air pressure inside the lungs therefore air from outside the body moves in to equalise the pressure.
What happens during expiration?
The muscles relax
Which moves the ribcage and sternum down and in
This decreases the volume of the thoracic cavity
This increases air pressure inside the lungs so air from outside the body moves to equalise the pressure.
What is tidal volume?
The normal amount of air inhaled or exhaled per breath.
What is vital capacity?
The largest volume of air that can be forcibly expired after the deepest possible inspiration.
What is residual volume?
The amount of air left in the lungs after maximal expiration.
What is expiratory reserve volume?
The amount of are that can be forced out after normal expiration.
What is inspiratory reserve volume?
The amount of air that can be forced in after normal inspiration.
What is anaerobic respiration?
This is when energy is created in the absence of enough oxygen and the muscles now rely on glucose from the food we eat to generate energy for movement.
When is anaerobic respiration used?
High intensity, short burst activities like the 100m sprint.
What is the equation for anaerobic respiration?
What is aerobic respiration?
Energy is created from the air we inhale, as it relies on the oxygen we breathe constantly, so the energy can be sustained for longer stretches of time.
When is aerobic respiration used?
In low to medium intensity exercise, like endurance running.