which artery is an exception and carries deoxygenated
pulmonary artery
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what is the structure of an artery
Has a thick outer wall, thick layer of muscles and elastic fibers, small lumen. blood is under a high amount of pressure
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what is the function of a vein
carries deoxygenated blood into the heart. apart from the pulmonary vein
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what is the structure of a vein
Has a thin outer wall, thin layer of muscles and elastic fibers, large lumen. blood is under a low amount of pressure and contains valves to prevent backwards blood flow
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what is the function of a capillaries
joins up artery's and veins. provides nutrients, water, oxygen to cells and removes waste
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what is the structure of a capillary
very small lumen and one cell thick to aid diffusion
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what is plasma
a liquid carrying water, nutrients and hormones
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what is the function of platelets
forms clots to prevent bleeding and prevents bacteria from getting into the blood stream
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what is the function of erythrocytes
RBC. contains hemoglobin that transports oxygen around the body
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What is the function of leukocytes
WBC. part of the immune system that helps to protect the body from pathogens
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what is the function of lymphocytes
WBC. release antibodieds found in lymph tissue to protect the body
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what is the function of phagocytes
WBC. ingest bacteria and pathogens found in the blood
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which artery is an exception and carries deoxygenated
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