Chpt 14 Quiz 2 AP

What is the underlying cause of sickle cell disease?

• Overproduction of hemoglobin

• A genetic mutation

• A deficiency in intrinsic factor

• A deficiency in dietary iron

Bruise-like spots may develop on the skin as a result of a low platelet count. What are these spots called?

• Blood blisters

• Pinpricks

• Petechiae

• Hematomas

How does heparin prevent the clotting of blood?

• By inhibiting the formation of prothrombin activator and the action of thrombin on fibrinogen

• By depleting the blood of platelets

• By binding to calcium ions

• By interfering with the formation of thrombin and fibrinogen

What is the primary function of lymphocytes?

• To act against foreign substances.

• To phagocytize damaged cells.

• To release substances that initiate blood clots.

• To produce enzymes that dissolve blood clots.

Individuals with type AB blood are sometimes referred to as universal donors.

• True

• False

What is a hematocrit?

• Stem cell that gives rise to the agranulocytes

• Percent of red blood cells in a blood sample

• An abnormal red blood cell resulting from a genetic disorder

• Clotting factor

Which of the formed elements releases serotonin?

• Erythrocytes

• Basophils

• Platelets

• Neutrophils

Alice has iron deficiency anemia. She takes iron supplements as instructed by a doctor. In order to improve the absorption of iron, Alice is careful about what she drinks when she takes her supplement. It is helpful to take the supplement with__________ which improves absorption. But taking the supplement with__________ will decrease the absorption of the iron.

• Correct: orange juice; tea 

• milk; orange juice 

• tea; milk 

• tea; orange juice

Which plasma protein is described correctly?

• Albumin: functions in immune responses.

• Beta globulins: functions to maintain blood osmotic pressure.

• Fibrinogen: functions in blood coagulation.

• Gamma globulin: transports lipids and fat-soluble vitamins.

What condition involves a decrease in the white blood cell count?

• Anemia

• Thrombocytopenia

• Leukocytosis

• Thrombocytosis

• Leukopenia