The Lungs (AQA GCSE Biology Combined Science): Flashcards
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Practise the cards
10 cards from this deck
Location of lungs in the body
Location of lungs in the body
In thorax (upper body), protected by ribcage
Function of intercostal muscles
Function of intercostal muscles
Ventilate lungs by moving ribcage during breathing
What trachea divides into
What trachea divides into
Two bronchi
What alveoli are
What alveoli are
Small air sacs where gas exchange occurs
Effect of diaphragm contracting
Effect of diaphragm contracting
Moves down, increases volume of thoracic cavity
Ribcage and diaphragm movement during inhalation
Ribcage and diaphragm movement during inhalation
Ribcage up and out, diaphragm down
Ribcage and diaphragm movement during exhalation
Ribcage and diaphragm movement during exhalation
Ribcage down and in, diaphragm up
How oxygen moves from alveoli to blood
How oxygen moves from alveoli to blood
Diffuses down its concentration gradient
Benefit of thin alveoli walls
Benefit of thin alveoli walls
Creates short diffusion pathway, speeds gas exchange
How to calculate breathing rate
How to calculate breathing rate
Breaths taken minutes = breaths per minute