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B5 Revision Emily Buckett (Blood (Plasma (Liquid part of blood (mainly…
B5 Revision Emily Buckett
Blood
Plasma
Liquid part of blood (mainly water)
Distributes heat around the body
Gives blood it's bulk
All substances apart from oxygen transported
by the blood are carried via the plasma
Helps distribute heat around the body
Red blood cells
Biconcave shape for large surface area
Have no nucleus to allow space for haemoglobin
If haemoglobin circulated freely in the plasma, the blood would
be too thick to flow properly
Packed with the protein haemoglobin
Haemoglobin binds with oxygen as blood passes through the lungs. Oxygen released from haemoglobin as blood circulates through the tissues of the body.
Flexible to fit through tiny capilleries
White blood cells
Platelets
Blood vessels
Organ systems
The heart