Transcript Blood Notes
Parts of the blood
Blood is the fluid circulating in
the body that carries nutrients
and oxygen, removes waste
products and fights infection.
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Red Blood Cells
Plasma
White Cells
Platelets
Red blood cells
Red blood cells carry oxygen to the body’s organs and tissues.
The inside of the red blood cell is filled with the protein haemoglobin.
Plasma
Blood cells float in a strawcoloured liquid called plasma
Plasma consist of water,
waste, and hormones.
White blood cells
White blood cells attack invading
microbes that cause disease
They do this in two ways:
1. One type of white blood cell produces
chemicals called antibodies.
These antibodies lock on to proteins
called antigens on the surface of the
microbes.
2. Another type of white blood cell
digests any microbes the antibodies
lock on to.
Platelets
Platelets are
• bits of cell broken off
large cells
They
• help blood to clot
• and stop bleeding at cuts.
If wound is too large, your blood
doesn’t clot. You need a blood
transfusion
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Blood transfusion-transfer of blood from one person to next
Replaces lost blood
Regularly treat serious blood diseases.
Blood groups
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There are four blood groups – A, B, AB and O
Your parents’ blood groups affect what group you
belong to. One gene from mother one gene from
father
Your genes cause proteins to exist on surface of all
red blood cells
Clumping Proteins
• These proteins recognize foreign blood
and then clump
– Ex: if you have blood type A, your blood
will clump when mixed with B
• Clumping= failed transfusion. Clogs
capillaries and leads to death
Clumping
% of Population of Blood Type
Universal
Donor
Universal
Receiver