Exam 11: The Blood

Which leukocyte contains histamine in its granules?

Describe the ABO blood types and the factors that determine the type of blood a person might receive in a transfusion.

Polycythemia often occurs in those who live at high altitudes.

All of the constituents present in the plasma are freely diffusible across the capillary walls.

Clots are slowly dissolved by

People with type-A blood produce anti-B antibodies without ever being exposed to type-B blood, but Rh-negative individuals produce anti-Rh antibodies only if they are exposed to Rh-positive blood.

Platelet aggregation is reinforced by what signal?

Polycythemia can occur in association with chronic lung disease.

Myeloid stem cells give rise to all leukocytes except

Aplastic anemia is due to intrinsic factor deficiency.

When small blood vessels are damaged, loss of blood is prevented by

The intrinsic clotting pathway stops blood in an injured vessel, whereas the extrinsic pathway clots blood that has escaped into the tissues.

Use this figure to answer the corresponding questions. Of the cells identified with numbers 4-12, which type is the most abundant in the blood?

Antibodies are

Lymphocytes are the only granulocytes that make gamma globulins.

Serum is not identical in composition to plasma.

A deficiency of vitamin B₁₂ is responsible for aplastic anemia.

Vitamin B₁₂ is a required clotting factor.

Fibrinogen is the insoluble clot-forming protein.

Type AB blood has both A and B antigens and no anti-A or anti-B antibodies.