Composed of: Plasma (mostly water) Red blood cells (carries oxygen) White blood cells (immune...
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Transcript of Composed of: Plasma (mostly water) Red blood cells (carries oxygen) White blood cells (immune...
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Blood and Lymph
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Blood
Composed of: Plasma (mostly
water) Red blood cells
(carries oxygen) White blood cells
(immune system) Platelets (blood
clotting)
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Blood Clotting
When you cut yourself: Platelets stick to edges of
broken blood vessels and cluster around wound
Platelets release clotting factors (proteins)
These proteins produce fibrin – long sticky strings
Fibrin sticks to blood vessel walls and forms a web – red blood cells get caught in it
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Blood Types
Four different blood types: A, B, AB, O
Determined by markers (antigen) on RBCs that trigger our immune system
If your body finds a foreign marker, it will attack it with special proteins (antibodies)
A
We are armed and ready to destroy Type
B!
Antigen
Antibodies
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Blood Types
Type A blood: A antigens Produce anti-
B antibodies
A
We are armed and ready to destroy B!
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Blood Types
Type B blood: B antigens Produce
anti-A antibodies
B
We are armed and ready to destroy Type
A!
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Type AB blood: A and B antigens No antibodies produced
Blood Types
A
Sorry, we have other important
places to be!
B
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Blood Types
Type O blood: No antigens Anti-A and anti-B antibodies produced
At your service!
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Transfusions
What type of blood can a Type A person receive?
A
We are armed and ready to
destroy B!
A
B
AB
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Transfusions
What type of blood can a Type B person receive?
BA
B
AB
We are armed and ready to destroy Type
A!
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Transfusions
What type of blood can a Type AB person receive?
A
B
AB
AB
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Transfusions
What type of blood can a Type O person receive?
A
B
AB
I am armed and ready to destroy Type
B!
I am armed and ready to destroy A!
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Transfusions
To whom can a Type A person give blood to?
To whom can a type B person give blood to?
To whom can a type AB person give blood to?
To whom can a type O person give blood to?
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Lymphatic System
Plasma (and some other cells) moves through capillary walls and into fluid between cells lymph
Some reabsorbed The rest goes into system
of vessels, nodes, and organs
These “screen” the lymph for microorganisms (germs) before returning it to circulatory system
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Lymphatic System
White blood cells in lymph nodes destroy “trash” found in lymph
When you’re sick lots of “trash”
Lymph nodes swell
Lymph vessels also run along intestines
Absorb fat and fat-soluble vitamins
Transports them to blood