Blood KNP Notes

7/30/2019 Blood KNP Notes

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Human Body Systems

B

Blood is always _________________ - bright red when it is oxygenated and a darker red

when it's lacking oxygen.

____________________ blood just looks blue because you're seeing it through your skin.

Oxygen poor blood is most definitely NOT blue. it is a sort of purplish/maroon color at best.

Realize that to see the vein at all, light has to go THROUGH the skin and hit the blood in the

vein. The blood absorbs certain colours of light, and reflects others back through the skin. For

some reason, the combination of these effects gives a blue color.

_________________ carries oxygen from your lungs to all your body cells. Blood also carries carbon dioxide from your cells to your lungs to be exhaled.

Blood carries waste products from your cells to your kidneys to be removed.

Blood transports nutrients and other substances to your body cells.

Cells and molecules in blood fight infections and help heal wounds.

Functions of Blood

name: __________________

Colour of Blood

On average, about 8% of your body weight is blood.

As an example, a 60kg person has = 4.8kg of blood.

60*.0.08 = 4.8

1kg = 1.4 L of blood

You have about 6.67 L of blood.

Amount of Blood

Plasma _______

Platelets < 1%

Red blood cells 45%

White blood cells


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What stops the bleeding?

_________________

stick to the wound and

release chemicals.

Then

___________________

carry out a series of chemical reactions.

The reactions cause threadlike fibers called _________________ to form a sticky net.

The net _________________ escaping blood cells and plasma and forms a clot.

Once the clot becomes hard, skin cells begin to reform under the scab.

Eventually the scab is lifted off, revealing fresh, new skin!

What if you cant clot??

You have a genetic disorder called hemophilia.

You lack one of the clotting factors that begin the clotting process.

Blood Clotting

There are 4 different blood types: A, B, AB, and O.

Types A, B and AB have chemical identification tags called _________________ on their

red blood cells. Type O red blood cells have no antigens.

Each blood type has specific _________________ in its plasma. They are proteins in your

plasma that destroy or neutralize substances that do not belong to your body.

Because of this, certain blood types cannot mix. If type A is mixed with type B blood, the

type A antibodies

determine that the type

B does not belong there.

The antibodies will cause

the type B red blood

cells to clump.

Blood Types


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Another chemical ID tag in blood is the ____________________.

If the Rh factor is on red blood cells, the person has Rh-_____________ (Rh +) blood.

If the Rh factor is not on the red blood cells, the person has Rh-___________(Rh - ) blood.

If an Rh- person receives a blood transfusion from an Rh+ person, he or she will produce

_________________ against the Rh+ factor. Clots will then form in the blood vessels and

the person will die.

If an Rh- mother is pregnant with an Rh+ baby, the mother might make antibodies to the

childs Rh factor. Close to the time of birth, Rh antibodies from the mother can pass from

her blood into the babys blood.

These antibodies can destroy the babys red blood cells.

If this occurs, the baby will have to receive a blood transfusion before or after the birth.

But at 28 weeks, the mother can receive an injection that blocks the production of

_________________ to the Rh+ factor.

These injections prevent the life-threatening situation.

Blood Types - Donation

Rh Factor


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Leukemia

A disease in which one or more types of white blood cells are made in

_________________ numbers.

These cells are _________________ and do not fight infections well.

They fill the ____________________ and crowd out the normal cells.

Then not enough red & white blood cells and platelets can be made.

Types of leukemia affect children or adults.

Medicines, blood transfusions, and bone marrow transplants are used to treat this disease.

Anemia

Anemia is a disease of the red blood cells, in which body cells cant get enough

_________________ and are unable to carry on their usual activities.

Causes:

Loss of blood

Diet lacks iron or certain vitamins

Side effect of the treatment of another disease

One type of anemia results from the disease sickle cell anemia, a _________________

genetic disorder.

In sickle cell anemia the red blood cells are _________________ shaped and cannot carry

_________________ properly.

Diseases of the Blood

Documents

Blood KNP Notes