Please enable JavaScript.
Coggle requires JavaScript to display documents.
exchange and transport in animals, the blood - Coggle Diagram
exchange and transport in animals
the blood
the blood
haemoglobin binds to oxygen to form oxyhaemoglobin
they have a biconcave disc shape, to give large surface area for absorbing oxygen
function to carry oxygen around body
another name of red blood cells is erythrocytes
they don't have a nucleus
contain red pigment called haemoglobin - contains iron
platelets
help blood to clot at wound
lack of platelets cause excessive bleeding and bruising
small fragments of cell
have no nucleus
white blood cells
lymphocytes are white blood cells that produce antibodies against microorganisms
phagocytes are white blood cells that change shape to engulf unwelcome microorganisms
plasma
pale straw coloured liquid
it carries:
CO2
platelets
nutrients
urea
hormones
antibodies and antitoxins
wbc and rbc