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15 cards from this deck
Thorax (upper body), protected by ribcage
Supply oxygen to blood and remove carbon dioxide
Windpipe; tube carrying air from mouth/nose to lungs
Between ribs; ventilate lungs by moving ribcage
Alveoli (small air sacs)
Contracts and moves down, increasing thoracic volume
Chest volume increases
Decreases (lower pressure)
Chest volume decreases
Increases (higher pressure)
From alveoli into blood (down concentration gradient)
From blood into alveoli (down concentration gradient)
Large surface area maximises diffusion
Thin walls create short diffusion pathway
number of breathsnumber of minutes\frac{\text{number of breaths}}{\text{number of minutes}}number of minutesnumber of breaths = breaths per minute
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