What are the main features of the red blood cells?
Small, to pass through capillaries. Contain hemoglobin to transport Oxygen (hemoglobin + oxygen Oxyhaemoglobin ) large, flat surface for diffusion.
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What are the three main functions of the blood?
Transport substaces and cells. Protect from infection and blood loss. Regulate pH and body temperature.
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What are the main features of white blood cells?
part of our immune system to fight infection. can engulf micro organisms or create antibodies.
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What are the main features of plasma?
55% of the blood. Contain Hormones, Antibodies, wastes (Urea from liver to kidneys, Carbon dioxide to lungs) and Nutrients like Glucose and amino acids (from small intestine to the rest of the body)
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What are Platelets?
Help form clots in wounds
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What is a double circulatory system?
A System with one blood supply to the lungs and one for the rest of the body. Blood MUST go through both.
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What are narrowed arteries treated with?
Stents. They are inserted into the artery and expanded.
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What are the advantages of Biological valves?
Don't damage red blood cells
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What are the disadvantages of Biological valves?
Become hard over several years. Higher chance of further operations.
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What are the advantages of mechanical valves?
Last a lifetime
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What are the disadvantages of mechanical valves?
Damage red blood cells as they pass through. Person has to take anti blood clot medicine. may hear valves opening//closing.
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What are the disadvantages of human heart transplant?
Shortage of donors
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What are the disadvantages of artificial heart transplant?
Prone to blood clotting
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Other cards in this set
Card 2
Front
What are the three main functions of the blood?
Back
Transport substaces and cells. Protect from infection and blood loss. Regulate pH and body temperature.
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