Carries oxygen from lungs to the muscles,used for respiration.
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White blood cells
fight bacteria/diseases
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Plasma
Transport waste, e.g CO2
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Platelets
Helps clot blood
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Arteries
Carries blood AWAY from heart at HIGH pressure
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Veins
Carries blood TO heart at LOW temperature
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Capillaries
Link between arteries and veins, allows materials to enter and leave the blood through thin walls
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Adaptations of red blood cells
No nucleus to more room for oxygen, Biconcave disc so it is able to fit through capillaries, Large surface area to pull in more oxygen, Haemoglobin attracts oxygen because it is a positive element
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Adaptations of white blood cells
Can change shape
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Adaptations of arteries
Thick muscle tissue so they don't burst under high pressure
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Adaptations of veins
Thin outer wall, valves to stop blood flowing backwards
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Valves
Stops blood from flowing backwards
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Adaptations of capillaries
Very thin to allow diffusion, large surface area to carry more oxygen
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Double circulatory system
Blood is carried to the lungs & body at the same time
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Pulmonary System
Carries blood to and from the LUNGS
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Systemic system
Carries blood to and from the BODY
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Vena Cava
Carries blood from the BODY TO HEART with DE-OXYGENATED blood
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Pulmonary artery
Carries DE-OXYGENATED blood from the HEART TO LUNGS
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Pulmonary Vein
Carries OXYGENATED blood from LUNGS TO HEART
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Aorta
Carries OXYGENATED blood from the HEART TO BODY
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Heart
Made of muscles, it acts like a pump to circulate blood around the body by contracting
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Movement of blood
Leaves the heart in arteries, flows through capillaries and organs and returns to the heart in veins
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Coronary arteries
Supplies muscle of the heart with blood
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Right/left sides of heart
Right side= De-oxygenated blood Left side= Oxygenated blood
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Preventing Cardiovascular disease
Healthy diet, lots of exercise, no smoking, statin drugs or angioplasty
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