The lungs (AQA GCSE Biology Combined Science): Flashcards
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Practise the cards
10 cards from this deck
System the lungs are part of
System the lungs are part of
Respiratory system
Medical name for windpipe
Medical name for windpipe
Trachea
Tiny air sacs for gas exchange
Tiny air sacs for gas exchange
Alveoli
Thickness of alveoli walls
Thickness of alveoli walls
One cell thick
Blood vessels around alveoli
Blood vessels around alveoli
Capillaries
Oxygen % in inhaled air
Oxygen % in inhaled air
21%
Oxygen % in exhaled air
Oxygen % in exhaled air
16%
Carbon dioxide % in exhaled air
Carbon dioxide % in exhaled air
5%
Alveoli surface area
Alveoli surface area
Why exhaled air has less oxygen
Why exhaled air has less oxygen
Used for cellular respiration