blood clotting Flashcards
platelets are
fragments of larger cells
if the platelets are exposed to oxygen they
release chemicals which start the clotting process
these chemicals cause the soluble plasma protein __________ to be changed into the insoluble fibrous protein ______. this forms a network of fibres which traps platelets and red blood cells forming a ____
fibrinogen
fibrin
clot
what is blood (cell tissue organ etc)
tissue
components of blood are
plasma
red blood cells
white blood cells:
lymphocytes
phagocytes
platelets
plasma: what made up of and what do
liquid (mainly water)
carries blood cells around the body
red blood cells: what and what do
biconcave disc
no nucleus
contains haemoglobin
transports oxygen
wbc; lymphocytes: what made up of and what do
same size as red blood cells
large nucleus
produce antibodies
wbc; phagocytes: what made up of and what do
larger than red blood cells
large nucleus
digest and destroy bacteria
wbc; platelets: what made up of and what do
smallest cells
release chemicals to make blood clot
clots can also form within blood vessels if plaques cause red blood cells to be broken; this can cause
heart attacks
