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The Heart, Blood and Blood Vessels (Blood (Plasma ((55%) (Pale yellow,…
The Heart, Blood and Blood Vessels
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Left atrium
Oxygen-rich blood from the lungs enters the left atrium through the pulmonary vein. The blood is then pumped into the left ventricle
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Blood
Plasma
(55%)
Pale yellow, transports cells
Red blood cells
(45%) (Erythrocytes)
Haemoglobin (red pigment), contains carbon dioxide and oxygen,
White blood cells
(1%)
immune system, antibodies - engulfs cells or kills them off.
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Movement of the blood
Left Atrium > Left Ventricle > Aorta > Body > Capillaries > Veins > Vena Cava > Right Atrium > Right Ventricle > Pulmonary Artery > Lungs > Left Atrium