Chapter 18
Tiny cell fragments involved in blood clotting
platelets, thrombocytes
Most of the remaining 5% of the volume of the formed elements; are involved in immunity
white blood cells (WBC), leukocytes
Choose the correct statement regarding the function of platelets.
Platelets secrete procoagulants, or clotting factors, which promote blood clotting
Which of the following factors is the initial stimulus for the release of EPO?
a decrease in blood oxygen
Plasma contains _______ but serum does not.
fibrinogen
The red pigmented protein in erythrocytes that transports oxygen and carbon dioxide is called
hemoglobin
Platelets are formed from
pieces of the megakaryocyte breaking off
The cell fragments that are a component of blood are
platelets
The component of plasma least likely (under normal conditions) to be present in the same amount in interstitial fluid is
protein
About 95% of the volume of the formed elements; transport oxygen and carbon dioxide
red blood cells (RBC), erythrocytes
Damage to a blood vessel will cause a vessel spasm.
true
In the fetus, hematopoiesis can occur in the lymph nodes, liver, thymus, and spleen.
true
