P3 Chapter 19 BLOOD Flashcards
The presence of an abnormal hemoglobin molecule results in the inability of RBCs to maintain their shape when oxygen levels in the blood decrease. This condition is known as
a. hemophilia
b. leukemia
c. polycythemia
d. sickle-cell disease
d. sickle-cell disease
Which of the following would be a normal hematocrit in an adult male?
a. 22%
b. 36%
c. 47%
d. 73%
c. 47%
An inherited inability to produce clotting factor VIII or IX results in the condition known as
a. erythroblastosis fetalis
b. hemophilia
c. erythropenia
d. leukocytosis
b. hemophilia
Which blood cell type functions to phagocytize antigen-antibody complexes?
a. basophils
b. neutrophils
c. eosinophils
d. monocytes
c. eosinophils
The primary site of hemopoiesis in adult humans is in the
a. spleen
b. red bone marrow
c. liver
d. thymus
b. red bone marrow
Which of the following is an agranular leukocyte that leaves the blood and becomes a wandering macrophage?
a. monocyte
b. neutrophil
c. eosinophil
d. basophil
a. monocyte
Inadequate absorption of viatmin B12 leads to anemia.
a. hemorrhagic
b. pernicious
c. aplastic
d. hemolytic
b. pernicious
Which of the following is NOT a function of blood?
a. transport of dissolved gases
b. distribution of nutrients
c. restriction of fluid losses through damaged vessels
d. digestion of nutrients
d. digestion of nutrients
Which blood type in theory could be considered the “universal donor”?
a. A
b. B
c. O
d. AB
c. O
Plasma proteins which act as antibodies and attack foreign proteins are classified as
a. albumins
b. serotonin
c. gamma globulins
d. fibrin
c. gamma globulins
A chemical releaased by platelets that causes vasoconstriction after a blood vessel is damaged is
a. heparin
b. histamine
c. serotonin
d. erythropoietin
c. serotonin
The specific process by which red blood cells are formed is called
a. hemopoiesis
b. leukopoiesis
c. erythropoiesis
d. erythropoietin
c. erythropoiesis
When a blood vessel is damaged, clot formation includes the conversion of fibrinogen into _____ by the action of the enzyme _____
a. thrombin, prothrombin
b. thrombin, erythropoietin
c. fibrin, prothrombin
d. fibrin, thrombin
d. fibrin, thrombin
Chemotherapy tends to destroy normal marrow cells as well as cancerous cells. Which of the following might be used to stimulate hemopoiesis in a cancer patient?
a. histamine
b. albumins
c. intrinsic factor
d. erythropoietin
d. erythropoietin
The stem cell that differentiates to form all types of blood cells is the
a. myeloid stem cell
b. progranulocyte
c. proerythroblast
d. pluripotent stem cell
d. pluripotent stem cell
Which formed elements of the blood are produced from fragmentation of megakaryocytes?
a. lymphocytes
b. monocytes
c. thrombocytes
d. eosinophils
c. thrombocytes
Vascular spasms and platelet plug formation are steps in
a. hemostasis
b. homeostasis
c. agglutination
d. erythropoiesis
a. hemostasis
During clotting, prothrombin is activated to form
a. fibrin
b. fibrinogen
c. prothrombin activator
d. thrombin
d. thrombin
An individual who lacks A and B agglutinogens and has both A and B agglutinins has ABO blood type
a. A
b. B
c. O
d. AB
c. O
In the condition erythroblastosis fetalis (hemolytic disease of the newborn)
a. the mother’s blood cells hemolyze because the baby’s ABO antigens cross the placenta
b. the baby’s blood cells hemolyze because the mother’s ABO antibodies cross the placenta
c. the mother’s blood cells hemolyze because the baby’s Rh antigens cross the placenta
d. the baby’s blood cells hemolyze because anti-Rh antibodies produced by the mother cross the placenta
d. the baby’s blood cells hemolyze because anti-Rh antibodies produced by the mother cross the placenta
Which of the following blood diseases is characterized by the production of large numbers of immature leukocytes?
a. anemia
b. leukopenia
c. leukemia
d. polycythemia
c. leukemia
Which of the following begins the common pathway in clotting?
a. release of tissue factor,
b. formation of prothrombinase
c. formation of fibrinogen
d. release of thromboplastin
b. formation of prothrombinase
Fibrinolysis refers to
a. formation of an embolus
b. dissolution of a clot
c. rapid mitosis of fibroblasts at the edges of a damaged vessel
d. breakdown of fibrin to form fibrinogen
b. dissolution of a clot
An adult human contains about _____ of blood
a. 10 quarts
b. 2-3 pints
c. 4-6 liters
d. 2-3 gallons
c. 4-6 liters






















