Please enable JavaScript.
Coggle requires JavaScript to display documents.
Biology 2.3 (blood (plasma (carry everything, red, white blood cells,…
Biology 2.3
blood
red blood cells
carry oxygen
biconcave disc shape
large surface area to absorb oxygen
no nucleus
contain red pigment haemoglobin
in lungs oxygen binds to haemoglobin in body tissue the reverse happens
when binded with oxygen = oxyhaemoglobin
white blood cells
eat microorganisms
fight infection
produce antibodies
produce antitoxins
do have a nucleus
platelets clot blood
small fragments of cells
no nucleus
help blood clot at a wound
lack of platelets cause excessive bleeding and bruising
plasma
carry everything
red, white blood cells
platelets
nutrients
carbondioxide
urea from liver-kidneys
hormones
proteins
antibodies and antitoxins
cardiovascular disease
stents
used to keep arteries open
coronary heart disease = blocked coronary arteries
layers of fat build up causing arteries to become narrow
result in heart attack from lack of oxygen to the heart
stents are tubes that are inserted in the artery to keep it open
statins
reduce cholesterol in the blood
Cholesterol is an essential lipid that your body produces to function properly
having bad cholesterol causes fatty deposit which can lead to coronary heart disease
statins are drugs
slows down the rate of fatty deposits
statins
advantages
reduce risk of strokes coronary heart disease
increases good Cholesterol
may prevent other diseases
disadvantages
long term drug must be taken regularly
can cause negative side effects
kidney failure, liver damage and memory loss
takes time to take effect
more on cardiovascular disease
artificial heart can pump blood around the body
faulty heart valves can be replaced with biological or mechanical valves
artificial blood can keep you alive in an emergency