Red blood cells
The other name for RBC's
Erythrocyte
The main component of plasma is
Water
True or false: WBC have a nucleus
True
WBC contain a nucleus
RBC lack a nucleus
What is the order of hemostasis? (3)
Vascular spasm - platelet plug - blood clot
__________ gives blood its color
Hemoglobin
What are the 4 blood types?
A, B, AB, O
What is another word for platelets?
Thrombocytes
An immature erythrocyte is called a
Reticulocyte
The clear, extracellular matrix of blood
Plasma
Category of WBC that contains a single multiobular nucleus?
Granulocytes
Name the 3 factors that prevents clots
Anticoagulants, blood flow & smooth endothelium
A move to a higher altitude would result in
True or false: Rh negative blood has Rh antigen
False
Rh-negative blood LACKS Rh antigen
Normal lifespan of a RBC
120 days
Which substance allows RBC to transport oxygen?
Hemoglobin
Leukocytes, erythrocytes and platelets are called
Formed elements
Name the 5 types of WBC
Neutrophils, basophils, eosinophils, lymphocytes, monocytes
What is a thrombus?
Part of hemostasis, formation of an unwanted clot
Excessive breakdown of RBC (hemolysis) results in
Jaundice
What is blood type determined by?
The type of antigen on the RBC
Most numerous formed element in the blood?
RBC
Why can RBC not replicate?
They lack a nucleus and DNA
The buffy coat is composed of (2 things)
WBC and platelets
Main function of WBC
Protection against pathogens
What does prothrombin activator do in the clotting process?
Converts prothrombin into thrombin
Why & where is Erythropoetin (EPO) secreted?
Secreted in the kidneys as a response to low oxygen levels
A person with O blood has
Neither A or B antigen
Anti-A and Anti-B antibodies
When is the extrinsic clotting pathway triggered?
A damaged blood vessel and the surrounding tissues release clotting factors.
What stimulates production of new RBC?
Decrease in oxygen levels
Hematocrit
___________, also known as WBC, are the fewest of the formed elements.
Leukocytes
What causes platelets to become sticky?
Exposure of collagen fibers
During the breakdown of RBC, heme is initially broken down into
Iron & bilirubin
Describe what happens when a Rh negative woman is pregnant with a Rh positive baby
The first pregnancy goes as normal. Upon delivery the blood mixes, which causes the body to create Rh antibodies. During the next pregnancy with a Rh positive baby, at delivery the body will attack the fetal RBC causing agglutination and possibly erythroblastosis fetalis (extreme anemia).
Plasmin dissolves the fibrin meshwork around blood clots