B3 Chapter 2 Blood Circulation

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What is the function of the circulatory system?
Transfers food and oxygen to every cell in the body.
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What other function does it have?
Carries and removes the waste products of CO2 and urea.
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Why is it called a DOUBLE circulatory system?
It is two circuits joined together.
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What are the types of blood the both sides pump?
Right is deoxygenated blood and left is oxygenated blood
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What happens when the oxygenated blood gives up its oxygen?
Becomes deoxygenated->pumped to heart,lungs then repeats
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What properties do arteries have?
large, thick walled tubes; blood carried away from the heart
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What properties do veins have?
large, thin walled tubes; blood brung back to the heart
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What properties do capillaries have?
Small, thin walled tubes; blood into and out of our tissues
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Why does the heart have valves?
To prevent the blood flowing backwards (wrong way)
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Step one of the heart contracting
Blood into the right atrium
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Step two
Through the tricuspid valve into the right ventricle
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Step three
Pumped out to the pulmonary artery to the lungs
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Step four
Lungs enrich the blood with oxygen
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Step five
Back through the pulmonary vein into left atrium
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Step six
Through the bicuspid valve into the muscular left ventricle
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Step seven
Pumped to the whole body through the aorta
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What blood and where does the first circulatory system pump to?
Deoxygenated blood to the lungs to take oxygen. Then to heart
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What does the blood contain?
Red Blood cells, white blood cells, platelets and plasma
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What does plasma carry?
Food particles, hormones/gases, waste, white/red BC, antibodies
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What are platelets?
Tiny bits of cells that help clot blood after a cut/injury
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What do red blood cells do?
Carries oxygen to organs
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Why does a red blood cell have a large surface area?
For absorbing oxygen
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What is the red pigment in a red blood cell?
Haemoglobin
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In lungs, when it combines with oxygen what does the haemoglobin become?
oxyhaemoglobin
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What do white blood cells do?
Make antibodies/toxins and engulfs microbes
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What is artificial blood?
Saline solution
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Why is artificial blood reliable on patients?
Gives patient enough time to produce new blood cells
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Why is it not used as permanent blood?
There are side effects
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What is an artificial heart?
A mechanical heart to pump if real one fails
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Why is it not permanent?
Temporary fix while waiting for a donor
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What is an advantage?
Less likely to be rejected (metals/plastics)
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What is a disadvantage?
needs surgery=>bleeding and infections
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What factors should people developing valves consider?
Works? (prevents backflow) Immune response? (rejected)
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What are stents used FOR?
Widening arteries that have narrowed through fat deposits
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What are stents used for?
Keeps arteries open so that blood can freely flow through.
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Other cards in this set

Card 2

Front

What other function does it have?

Back

Carries and removes the waste products of CO2 and urea.

Card 3

Front

Why is it called a DOUBLE circulatory system?

Back

Preview of the front of card 3

Card 4

Front

What are the types of blood the both sides pump?

Back

Preview of the front of card 4

Card 5

Front

What happens when the oxygenated blood gives up its oxygen?

Back

Preview of the front of card 5
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