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Percent blood that is plasma


Percent blood that is formed elements


What components in plasma

Proteins (albumin; controls blood volume and blood pressure, globulins, HDL LDL,) Electrolytes (ca++) Dissolved gases, nutrients and wastes

Formed elements

Erythrocytes (RBC) and platelets

How is blood type determined?

Particular antigen shown with antibodies of opposite antigen

What is anemia

Decrease in O2 carrying capacity

What is sickle cell anemia

When hemoglobin in red blood cells is released, cell changes shape to sickle shape

Neutrophils contain

lysosomal enzymes

basophils contain

heparin and histamine


lysosomal enzymes


no granular appearance


enter connective tissue, become macrophages, non specific attack


respond to specific antigens in the immune system

B cells attack what

bacterial infections

T Cells attack what


What are platelets for?

cell fragments containing clotting factors

What are three major steps for hemostasis?

1- platelet clumping at site of injury
2- Vasoconstriction, stimulated by substance released by platelets
3- Clotting, substances released fibrin and fibrinogen sticks

What does blood type O have?

Antibodies against both but not antigen

What does blood type AB have?

Antigens A and B but no antibodies

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