Choose the best answer.

1			Blood has all of the following functions EXCEPT ______________________
			A)	nutrient transport.
			B)	temperature regulation.
			C)	clotting.
			D)	vitamin D production.
			E)	pH buffering.
2			Early in human development, the first blood cell precursors form in __________________
			A)	the yolk sac.
			B)	the spleen.
			C)	the bone marrow.
			D)	the heart.
			E)	the liver.
3			A deficiency of circulating leukocytes is called ___________________________
			A)	leukocytosis.
			B)	leukemia.
			C)	polycythemia.
			D)	leukopenia.
4			Antibodies belong to a class of plasma proteins called ___________________________
			A)	albumin.
			B)	fibrinogens.
			C)	beta globulins.
			D)	gamma globulins.
			E)	hormones.
5			Which of the following is NOT a component of hemostasis?
			A)	platelet plug formation
			B)	vasodilation
			C)	secretion of serotonin
			D)	conversion of fibrinogen to fibrin
			E)	secretion of platelet-derived growth factor
6			Any form of anemia that results from an excessive rate of erythrocyte destruction is classified as ________________________________
			A)	hypoplastic anemia.
			B)	hemorrhagic anemia.
			C)	hemolytic anemia.
			D)	pernicious anemia.
7			Which of the following is a characteristic of mature red blood cells?
			A)	They undergo mitosis.
			B)	They lack a nucleus.
			C)	They have numerous mitochondria.
			D)	They carry most of the carbon dioxide that is transported in the blood.
8			Which cell is phagocytic?
			A)	basophil
			B)	macrophage
			C)	lymphocyte
			D)	platelet
9			What is a function of eosinophils?
			A)	They produce histamine in response to inflammation.
			B)	They produce heparin.
			C)	They destroy body cells infected with viruses.
			D)	They phagocytize antigen-antibody complexes.
			E)	They produce antibodies.
10			What is hemophilia?
			A)	It is an hereditary clotting disorder.
			B)	It is an hereditary hemoglobin disorder.
			C)	It is an abnormal number of erythrocytes.
			D)	It is an abnormal lack of thrombocytes.
11			Macrophages develop from these precursor cells.
			A)	Reticulocytes
			B)	Rubroblasts
			C)	Megakaryocytes
			D)	Myeloblasts
12			What would be an indication that an individual is suffering from leukemia?
			A)	Examination of the blood reveals a large number of immature erythrocytes.
			B)	Examination of the blood reveals a large number of immature leukocytes.
			C)	The hematocrit is greater than 50.
			D)	The person has polycythemia.
13			Low oxygen supply, such as one encountered at high altitude, may result in which of the following conditions?
			A)	mononucleosis
			B)	polycythemia
			C)	leukopenia
			D)	leukocytosis
			E)	hemolytic anemia
14			The fluid portion of blood is called?
			A)	serum
			B)	gamma globulin
			C)	plasma
			D)	hematocrit
15			An erythrocyte is described as having this shape.
			A)	football
			B)	fresbie (flat disc)
			C)	convex disc shaped
			D)	biconcave disc shaped
16			Normally the number of red blood cells in a cubic millimeter of blood is about how many?
			A)	50
			B)	5,000
			C)	50,000
			D)	5,000,000
17			Normally a red blood cell (erythrocyte) is about the same size as a ______________ lumen.
			A)	capillary
			B)	bronchiole
			C)	vein
			D)	aorta
18			The most common white blood cell (leukocyte) at about 60% is the ______________________.
			A)	lymphocyte
			B)	neutrophil
			C)	monocyte
			D)	eosinophil
19			Which of the following leukocytes is NOT classified as a granulocyte?
			A)	neutrophil
			B)	basophil
			C)	eosinophil
			D)	monocyte
20			What is the name of the leukocyte, often seen in two sizes, that is described as having a small halo of cytoplasm and a round nucleus that fills the cell?
			A)	lymphocyte
			B)	monocyte
			C)	neutrophil
			D)	platelet
21			What is the name of the leukocyte that has a clear cytoplasm and a kidney-shaped nucleus?
			A)	neutrophil
			B)	lymphocyte
			C)	monocyte
			D)	basophil
22			Erythrocytes are filled with _______________ .
			A)	a nucleus
			B)	many mitochondria
			C)	molecules of gamma globulins
			D)	molecules of hemoglobin
23			The major function of the red blood cells is to transport __________________ .
			A)	oxygen
			B)	carbon dioxide
			C)	nitrogen
			D)	Both oxygen and carbon dioxoide are carried in rbc's.
24			There are normally about 5 to 10 thousand _____________ per mm3 of blood.
			A)	platelets
			B)	erythocytes
			C)	thrombocytes
			D)	leukocytes
25			These are cell fragments.
			A)	platelets
			B)	leukocytes
			C)	erythrocytes
			D)	neutrophils
26			These cell fragments are used to clot capillaries. What are they called?
			A)	neutrophils
			B)	basophils
			C)	platelets
			D)	monocytes
27			The average life of a red blood cell is about _____________.
			A)	10 days
			B)	120 days
			C)	5 years
			D)	your life time
28			The least common white blood cell type found in the blood is the _____________.
			A)	basophil
			B)	eosinophil
			C)	neutrophil
			D)	monocyte
29			The precursor of this cellular element is the megakaryocyte.
			A)	monocyte
			B)	lymphocytes
			C)	platelets
			D)	neutrophil
30			Megakaryocytes are found in the _______________.
			A)	muscle
			B)	bone marrow
			C)	brain
			D)	liver