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1.2.2 The Circulatory System

(a) Blood Vessel Structure

(b) Functions & Structures of Vessels
Have thick muscle because of the huge pressure the blood is under. Elastic recoil enables
blood pressure to be maintained.
Smooth endothelium to reduce friction. Valves to prevent backflow of blood. Large lumen

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(f) Blood Pressurisation (g) Sphygmomanometer

(h) Interpreting Blood Pressure


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