11. Hemophilia is __________________________.
a. A very serious type of anemia characterized by a progressive
degeneration of the bone marrow.
b. A hereditary disease characterized by a lack of one of the factors
necessary for the clotting of the blood.
c. A general term that refers to a group of anemias caused by weakened
red blood cell membranes.
A type of anemia caused by a deficiency of elemental iron in the blood.
12. Leukemia is ________________________.
a. A very serious and usually fatal condition characterized by the
excessive production of red blood cells.
b. A serious type of anemia predominant in older people because they
tend to have red blood cells with weakened membranes.
c. A disease of the white blood cell forming tissue characterized by an
abnormally high white blood cell count.
d. A disease of the red blood cell forming tissue which results in the
production of excessive numbers of red blood cells which phagocytize the other cells in
13. Arteriosclerosis is ____________________________.
A condition characterized by a loss of elasticity or hardening of the
A condition characterized by vasoconstriction of the arteries in the
A condition that occurs when a clot is formed in a blood vessel.
A serious condition that affects the arteries and causes them to lose