Circulatory system- blood (Edexcel GCSE Biology Combined Science): Flashcards
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Practise the cards
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Four main components of blood
Four main components of blood
Plasma, red blood cells, white blood cells, platelets
Plasma appearance
Plasma appearance
Straw-coloured liquid, just over half of blood volume
Substances transported by plasma
Substances transported by plasma
, digested food, urea, hormones
Red blood cell shape and advantage
Red blood cell shape and advantage
Biconcave shape increases surface area for absorption
Why red blood cells lack a nucleus
Why red blood cells lack a nucleus
To carry more haemoglobin
Main function of red blood cells
Main function of red blood cells
Transport oxygen from lungs to body tissues
Function of phagocytes
Function of phagocytes
Engulf and destroy pathogens through phagocytosis
Function of lymphocytes
Function of lymphocytes
Produce antibodies to neutralise pathogens
Structure of platelets
Structure of platelets
Cell fragments produced from large cells in bone marrow
Main function of platelets
Main function of platelets
Blood clotting to prevent blood loss