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Heart + Circulatory System

The circulatory System transports all types of materials around the body, Oxygen, Carbon Dioxide,
Hormones and Urea. They are transported in blood, in the blood vessels and are pumped around by
the heart.
Veins - Take blood to the heart.
Arteries ­ Take blood away from…

Page 2

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Veins Arteries
Deoxy ­ to heart Oxy ­ Away from
Big Lumen Small Lumen
Thin muscular Layer Thick muscular layer
Thin Wall ­ few elastic Thick wall ­ lots of
fibres elastic fibres
Under low Pressure Under high pressure
Slowly Quickly
Travels constantly Travel in a pulse rate


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