Two circuits joined together. The first one pumps deoxygenated blood to the lungs to take in oxygen. The second pumps oxygenated blood around the body.
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What does blood carry to and from the muscles?
Glucose molecules and oxygen TO the muscles. Waste products (e.g. carbon dioxide) AWAY FROM the muslces.
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What makes up blood?
Red blood cells, White blood cells, Platelets, Plasma.
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What are the properties of a red blood cell and how do they help?
Large surface area to transport lots of oxygen.
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What does a white blood cell do?
Fights infections.
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What do platelets do?
Cause the blood to clot at the injury site.
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What is plasma for?
Transporting nutrients(glucose and amino acids), antibodies, hormones and waste (carbon dioxide and urea).
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How are red blood cells adapted to their function?
Packed with haemoglobin (to bind oxygen) - no nucleus (more space for haemoglobin) - bioconcave shape (increased surface area for oxygen exchange)
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What are the function of valves in the heart and veins?
To stop the back flow of blood to increase the efficiency of blood flow.
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Where is tissue fluid formed?
Capillary beds.
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What is tissue fluid for?
To assist the exchange of chemicals by diffusion between capillaries and tissues.
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What diffuses through the tissue fluid?
Oxygen, carbon dioxide, glucose and urea.
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Other cards in this set
Card 2
Front
What does blood carry to and from the muscles?
Back
Glucose molecules and oxygen TO the muscles. Waste products (e.g. carbon dioxide) AWAY FROM the muslces.
Card 3
Front
What makes up blood?
Back
Card 4
Front
What are the properties of a red blood cell and how do they help?
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