Chapter 19. The Cardiovascular System: The Blood-Companion Site Quiz

Clotting may occur in an undamaged blood vessel. When that clot breaks loose and circulates through the bloodstream it is called A. an aneurysm B. an embolus C. a thrombus D. a thrombocyte

B. an embolus

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

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

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 of the following is true concerning the Rh blood group? A. Presence or absence of Rh antigens is genetically determined B. People with blood type B are really B negative C. Being Rh- is associated with sickle-cell disease D. Rh+ people can give blood to anyone

A. Presence or absence of Rh antigens is genetically determined

Vascular spasms and platelet plug formation are steps in A. hemostasis B. hemopoiesis C. agglutination D. erythropoiesis

A. hemostasis

Blood makes up _____ of the total body mass A. less than 10 percent B. about half C. 70 percent D. almost all

A. less than 10 percent

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

Neutrophils and macrophages are active in A. phagocytosis B. white blood cell formation C. blood coagulation D. antibody formation

A. phagocytosis

Which of the following statements describes platelets? A. platelets are cytoplasmic fragments containing clotting elements B. platelets are fully formed cells with clotting elements C. platelets are derived from WBCs D. platelets are derived from RBCs

A. platelets are cytoplasmic fragments containing clotting elements

A high reticulocyte count might indicate A. low levels of hemoglobin in the red blood cells B. increased production of red blood cells C. abnormal production of platelets D. abnormal production of white blood cells

B. increased production of red blood cells

Inadequate absorption of vitamin B12 leads to ________ anemia A. hemorrhagic B. pernicious C. aplastic D. hemolytic

B. pernicious

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

Aged red blood cells are destroyed mainly by macrophages in the _____. A. lungs B. kidneys C. thymus D. spleen

D. spleen

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

Which of the following would be a normal hematocrit in an adult male? A. 22% B. 36% C. 47% D. 73%

C. 47%

Which of the following statements is true? A. Iron is stored in the liver as globin B. The globin portion of hemoglobin is eliminated as urobilinogen C. Biliverdin is produced from the breakdown of the non-iron portion of heme D. Red blood cells can live for years before being broken down

C. Biliverdin is produced from the breakdown of the non-iron portion of heme

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

Which blood type in theory could be considered the universal donor? A. A B. B C. O D. AB

C. O

Which blood cell type is elevated in a parasitic infection? A. basophils B. neutrophils C. eosinophils D. monocytes

C. eosinophils

The specific process by which red blood cells are formed is called A. hemopoiesis B. leukopoiesis C. erythropoiesis D. erythropoietin

C. erythropoiesis

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

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

White blood cells are identified microscopically by the shape of their ______ and presence or absence of ______ in the cytoplasm. A. cell membrane, mitochondria B. Golgi bodies, endoplasmic reticulum C. nuclei, granules D. mitochondria, hemoglobin White blood cells are identified microscopically by the shape of their ______ and presence or absence of ______ in the cytoplasm. A. cell membrane, mitochondria B. Golgi bodies, endoplasmic reticulum C. nuclei, granules D. mitochondria, hemoglobin

C. nuclei, granules

Which formed elements of the blood are produced from fragmentation of megakaryocytes? A. lymphocytes B. monocytes C. thrombocytes D. eosinophils

C. thrombocytes

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

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

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

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

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

In the condition "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

During clotting, prothrombin is activated to form A. fibrin B. fibrinogen C. prothrombin activator D. thrombin

D. thrombin

The most abundant molecule present in blood plasma is A. a proteins called albumin B. fibrinogen C. glucose D. water

D. water