Blood
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what are the functions of blood
• it protects the body against harmful bacteria • helps to clot blood in wounds to prevent blood loss • carries oxygen and glucose to all parts of the body • removes carbon dioxide and waste from the body
what is blood made up of
• red blood cells • white blood cells • platelets • plasma
what are red blood cells
red blood cells contain a red pigment called haemoglobin that binds to oxygen
what is the function of red blood cells
red blood cells carry oxygen from the lungs to all the parts of the body
what is the functions of white blood cells
• they destroy bacteria • they produce antibodies that help trigger a response to remove bacteria or viruses during an infection • white blood cells can also detect and reject foreign tissues and organs
what does platelets do
they stop bleeding at wounds by forming a mesh and clotting blood
what does plasma do ?
they transport substances such as carbon dioxide and digested food around the body