Biology Further

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Name the four parts of the heart?
Right Atria, Right Ventricle, Left Atria, Left Ventricle.
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Name the vein that takes blood into the heart and the artery that takes it away?
Vena Cava. Aorta
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Articifial heart- Benefit/ Problem?
B- Prolong lifespan. P- Infection, irregular heartbeat.
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Biological valves- Benefits/problems?
B- Don't damage red blood cells. P- Can harden, possibly more opps.
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Mechanical valves- Benefits/problems?
B- Strong&durable. P-Damage red blood cells, anti-rejection tablets. hear valves.
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Arteries:
Thick walls - to resist the high pressure of the blood. Thick layer of elastic fibres – to allow the artery to stretch. Thick layer of muscle within the wall – to allow blood to be diverted to where it is needed in the body
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Veins:
Thin walls as they have blood with a lower pressure flowing through them. One-way valves in them to prevent blood flowing back
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Capillaries:
Made of thin cells so susbtances can pass in and out. Narrow.
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What is plasma?
Straw-coloured liquid. Transports carbon dioxide from organs to the lungs. Urea from liver to kidneys. Souble products from small intestine to organs.
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what are red blood cells?
Transport oxygen from lungs to organs. Don't have a nucleus, Haemoglobin+oxygen= oxyhaemogloblin.
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What happens to oxyhaemogloblin?
Spilts up. relasing oxygen, which diffuses into cells.
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What are white blood cells?
Suspended in the plasma. From part of bodies defence system (engulf pathogens& send out anti-bodies). Have a nucleus.
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What are platelets?
Small fragments of cells. Help blood clot. Don't have a nucleus.
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Other cards in this set

Card 2

Front

Name the vein that takes blood into the heart and the artery that takes it away?

Back

Vena Cava. Aorta

Card 3

Front

Articifial heart- Benefit/ Problem?

Back

Preview of the front of card 3

Card 4

Front

Biological valves- Benefits/problems?

Back

Preview of the front of card 4

Card 5

Front

Mechanical valves- Benefits/problems?

Back

Preview of the front of card 5
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