The Cardiovascular & Respiratory System (AQA GCSE Biology): Flashcards
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Practise the cards
12 cards from this deck
Three types of blood vessels
Three types of blood vessels
Arteries, veins, capillaries
Direction blood flows in arteries
Direction blood flows in arteries
Away from heart
Artery wall thickness
Artery wall thickness
Thick walls
Artery lumen size
Artery lumen size
Small
Blood pressure in arteries
Blood pressure in arteries
High
Direction blood flows in veins
Direction blood flows in veins
Towards heart
Vein walls compared to arteries
Vein walls compared to arteries
Thinner
Special feature of veins
Special feature of veins
Valves
Function of valves in veins
Function of valves in veins
Stop blood flowing backwards
Capillary wall thickness
Capillary wall thickness
Very thin - one cell thick
Main function of capillaries
Main function of capillaries
Allow diffusion of substances
What capillaries connect
What capillaries connect
Arteries to veins