17.4-17.11

Which of the following is incorrect about hemoglobin? -It is associated with the transport of respiratory gases. -Normally, each red blood cell contains about 280 million molecules of hemoglobin molecules. -It is a plasma protein. -It has a complex quaternary structure.

It is a plasma protein.

________ are immature erythrocytes that are present in the circulation. -Normoblasts -Band cells -Reticulocytes -Erythroblasts -Myeloblasts

Reticulocytes

White blood cells that release histamine at the site of an injury are -neutrophils. -monocytes. -eosinophils. -lymphocytes. -basophils.

basophils.

Within macrophages in the spleen, liver, and bone marrow, each heme unit is stripped of its iron and is first converted to which of the following organic compounds? -biliverdin -urobilin -bilirubin -stercobilin

biliverdin

Which of these descriptions best matches the term lymphocytes? -release histamine -often elevated in allergic individuals -kill bacteria using cytotoxic chemicals -defend against specific pathogens or toxins -become macrophages

defend against specific pathogens or toxins

The ________ is a procedure that is used to determine the number of each of the various types of white blood cells -hematocrit -mean corpuscular volume -differential count -complete blood count -reticulocyte count

differential count

Tissue factor (Factor III) is a factor in the ________ pathway. -retraction -intrinsic -common -fibrinolytic -extrinsic

extrinsic

Each hemoglobin molecule contains -four iron atoms. -one alpha and one beta chain. -one heme group. -four alpha chains. -None of the answers is correct

four iron atoms

What term is associated with elevated values of mean corpuscular hemoglobin concentrations (MCH)? -polycythemia -macrocytic -reticulocytosis -hyperchromic

hyperchromic

RBCs typically live about 120 days. The main reason for this short lifespan in RBCs is their -lack of nucleus. -flexibility. -cell shape. -large surface area-to-volume ratio. -concentration of Hb.

lack of nucleus

A cancer of the white blood cells is called -hemophilia. -leukocytosis. -pernicious anemia. -leukemia. -jaundice

leukemia.

If bile ducts are blocked, -more bilirubin appears in the plasma, and bilirubin appears in the skin and eyes. -bilirubin appears in the skin and eyes. -more hemolysis takes place. -more bilirubin appears in the plasma. -All of the answers are correct.

more bilirubin appears in the plasma, and bilirubin appears in the skin and eyes.

The most numerous white blood cells in peripheral circulation are the -eosinophils. -monocytes. -neutrophils. -lymphocytes. -basophils.

neutrophils.

The enzyme that can digest fibrin and dissolve a clot is -heparin. -fibrinase. -phosphokinase. -thrombin. -plasmin.

plasmin.

Sensitization during hemolytic disease of the newborn refers to -the fetal immune system producing antibodies against the fetus' RBCs. -spontaneous miscarriage of a woman's first baby due to blood incompatibilities. -the mother's immune system producing antibodies against the mother's RBCs. -the fetal immune system producing antibodies against the mother's RBCs. -the mother's immune system producing antibodies against the fetus' RBCs.

the mother's immune system producing antibodies against the fetus' RBCs.

People with type AB blood are considered the "universal recipient" for transfusions because -they are usually Rh negative. -they usually have very strong immune systems. -their blood is plentiful in A and B antibodies. -their blood lacks A or B antibodies. -their blood cells lack A and B antigens.

their blood lacks A or B antibodies.

The conversion of fibrinogen to fibrin is catalyzed by -plasmin. -factor VIII. -fibrinogen-converting enzyme. -prothrombin activator. -thrombin.

thrombin.

Which blood type contains RBCs with surface antigen B only and plasma that contains only anti-A antibodies? -type O -type A -type B -type AB

type B

How would removal of calcium ions from a blood sample affect coagulation? -The coagulation pathway would be lacking a required cofactor at many steps and coagulation would be prevented. -The coagulation pathway would be lacking a required cofactor at many steps and no important effect because magnesium can substitute for calcium. -The coagulation pathway would be lacking a required cofactor at many steps. -Coagulation would be prevented. -There would be no important effect because magnesium can substitute for calcium

The coagulation pathway would be lacking a required cofactor at many steps and coagulation would be prevented.

Choose the correct statement regarding hemolytic disease of the newborn (HDN). -In the second pregnancy of an Rh- mother with an Rh+ fetus, the fetal demand for blood cells decreases precipitously. -Unlike anti-A and anti-B antibodies, anti-Rh antibodies are able to cross the placenta and enter the fetal bloodstream. -After delivery, the infant's entire blood volume may require replacement to remove the fetal anti-Rh antibodies. -A newborn with severe HDN has a low concentration of circulating bilirubin

Unlike anti-A and anti-B antibodies, anti-Rh antibodies are able to cross the placenta and enter the fetal bloodstream.