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Your circulation

At the centre of your blood system is your heart and the rest is made up of
tubes called blood vessels.
3 types of blood vessels: arteries, veins and capillaries.

ARTERIES carry blood away from the heart
VEINS carry blood back to the heart
When they get to…

Page 3

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Wider than arteries
Thinner walls
Lower pressure blood flows slower
Blood controlled by valves to prevent blood flowing backwards.

Double Circulation

RIGHT side of the heart
Pumps blood to the lungs and then back to the heart again.
In the lungs, the blood picks up oxygen.

Carries oxygenated blood.
CO2…

Page 4

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The Heart
2 pumps side by side: RIGHT SIDE deoxygenated blood
LEFT SIDE oxygenated blood




Important blood vessels in the circulation:
o The aorta ­ takes blood from the heart to the body
o The pulmonary artery ­ takes blood from the heart to the lungs
o The vena cava…

Page 5

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The right ventricle pumps blood to the lungs in the pulmonary artery
The left ventricle pumps blood to the rest of the body in the aorta
Deoxygenated blood returns to the right atrium in the vena cava
Oxygenated blood returns to the left atrium in the pulmonary vein

Control of…

Page 6

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1) Plasma ­ mainly water with chemicals dissolved in it:
a. Food (sugars, amino acids, vitamins and minerals)
b. Chemical waste like urea
c. Blood proteins like antibodies
d. Hormones
2) 3 types of blood cells:
a. Red blood cells
b. White blood cells
c. Platelets



Red Blood Cells




No…

Page 7

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Blood Clotting




Platelets are small fragments of cells made of bone marrow
Platelets change fibrinogen into fibrin
Fibrin forms a meshwork of threads that traps red cells to make a clot.

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Swallowtail

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A very concise set of notes with useful coloured diagrams covering blood and circulation.These notes would be useful for all those GCSE specifications that have topics covering the circulatory system.  Why not use these alongside one of the quizzes or a set of flashcards?

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