HOMEWORK

Which of the following statements about blood is false?

Normal pH is 6.8 to 7.0.

When considering only the ABO blood typing system, which blood type contains RBCs with surface antigen B only and plasma that contains only anti-A antibodies?

TYPE B

Which is true regarding heme?

The binding of an oxygen molecule to the iron in a heme unit is completely reversible.

The intrinsic pathway of coagulation is activated by the

activation of proenzymes exposed to collagen.

Which of these descriptions best matches the term platelets?

adhere to collagen beneath endothelium

Blood type A- would give which of the following results?

agglutination with anti-A antibodies

Monocytes are classified as:

agranular leukocytes, which are very large cells with kidney bean-shaped nuclei and abundant cytoplasm.

Which of the following terms can be used interchangeably?

antigen and agglutinogen

Which of the following is not a phagocytic cell?

basophil

White blood cells that release histamine at the site of an injury are

basophils.

Which of the following is NOT a function of the blood?

generates body temperature

The percent fraction of formed elements relative to whole blood is the

hematocrit.

A typical adult hematocrit is

higher in males than females.

Which blood disorder involves a deficiency of Vitamin B12?

pernicious anemia

A person's blood type is determined largely by the

presence of specific glycoproteins on the cell membrane.

The intrinsic pathway of the coagulation phase __________.

proceeds with the assistance of PF-3

Sensitization during hemolytic disease of the newborn refers to

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

The conversion of fibrinogen to fibrin is catalyzed by

thrombin.

Bilirubin is __________.

transported to the liver for excretion in the bile

Each of the following is a characteristic of whole blood except

viscosity about the same as water.

Bill wants to determine his blood type, so he takes a few drops of blood from a puncture wound in his finger and mixes it with various antisera. His blood cells agglutinate when mixed with the anti-A sera but not with the anti-B or anti-Rh sera. Which of the following is not true assuming Bill had not been exposed to the Rh antigen at any point?

Bill's plasma contains Rh antibodies.

With large numbers of erythrocytes dying and being replaced every day, what happens to the heme released from the erythrocytes?

Heme is catabolized into two pigments, biliverdin and bilirubin.

Which of the following is incorrect about hemoglobin?

It is a plasma protein.

Jaundice is a symptom where the patient exhibits a yellow discoloration of the skin and eyes. What causes jaundice?

The liver is unable to process bilirubin, so its level in the blood rises.

Because of their short lifespan, a huge number of erythrocytes are recycled by macrophages. Which of the following is NOT a function of the macrophage?

The macrophage synthesizes a small amount of hemoglobin and transports it to the bone marrow.

Which of the following statements is FALSE?

Veins return blood to the capillaries

The disease sickle cell anemia is an example of what can happen if

a gene for adult hemoglobin is abnormal.

The common pathway of coagulation begins with the

conversion of Factor X to prothrombin activator.

Which of the following are the most abundant of the formed elements?

erythrocytes