Cardiovascular & Respiratory System (AQA GCSE Biology Combined Science): Flashcards
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Practise the cards
10 cards from this deck
Three main types of blood vessels
Three main types of blood vessels
Arteries, veins, and capillaries
Which direction do arteries carry blood?
Which direction do arteries carry blood?
Away from the heart
Wall structure of arteries
Wall structure of arteries
Thick walls made of muscle and stretchy fibres
Which direction do veins carry blood?
Which direction do veins carry blood?
Back towards the heart
Feature veins have to prevent backflow
Feature veins have to prevent backflow
Valves
Thickness of capillary walls
Thickness of capillary walls
One cell thick
Main function of capillaries
Main function of capillaries
Exchange of substances between blood and cells
Blood vessel type with highest pressure
Blood vessel type with highest pressure
Arteries
Lumen size in veins compared to arteries
Lumen size in veins compared to arteries
Larger
Why do arteries need thick walls?
Why do arteries need thick walls?
To cope with high pressure from heart pumping