(A&P) Chapter 18

How many globins (protein building blocks) are found in a single hemoglobin molecule? 1 8 4 2 6

4

Plasma makes up about ______ percent of a centrifuged sample of whole blood. 35 75 25 45 55

55

An individual's hematocrit would vary with sex. age. All of the choices are correct. altitude.

All of the choices are correct.

Which term best describes the function of blood when considering the presence of leukocytes and antibodies? Transportation Prevention Protection Regulation

Protection

Which of the following is a step within the common pathway of blood clotting? Factor III combines with factor VII. Factor XII converts inactive factor XI to active factor XI. Prothrombin is activated to thrombin. Calcium combines with factor IX.

Prothrombin is activated to thrombin.

The hemoglobin found in erythrocytes is able to chemically attach to both oxygen and carbon dioxide. only carbon dioxide. oxygen, carbon dioxide, and nitrogen. only nitrogen. only oxygen.

both oxygen and carbon dioxide.

Oxygen-poor blood is _________ in color. bright red dark blue light blue dark red

dark red

A malnourished person might have abnormally low levels of plasma proteins. As a result, colloid osmotic pressure increases, and there is fluid retention in the interstitial space. decreases, and there is fluid retention in the interstitial space. decreases, and so blood volume is abnormally high. increases, and so blood volume is abnormally high.

decreases, and there is fluid retention in the interstitial space.

The clinical definition of the hematocrit refers to the percentage of leukocytes in the blood. plasma in the blood. erythrocytes in the blood. platelets in the blood. all formed elements in the blood.

erythrocytes in the blood.

The most numerous of the formed elements are the erythrocytes. albumins. platelets. basophils. neutrophils.

erythrocytes.

The process of producing the formed elements of blood is called leukocytosis. leukopenia. agglutination. erythroblastosis. hematopoiesis.

hematopoiesis

T-lymphocytes are a category of neutrophils. eosinophils. monocytes. lymphocytes. basophils.

lymphocytes

The type of leukocyte that will migrate in the blood and take up residence in the tissues as a macrophage is a(n) neutrophil. lymphocyte. eosinophil. monocyte. basophil.

monocyte

Macrophage colony-stimulating factor stimulates the production of granulocytes from their progenitors. erythrocyte progenitor cells. monocytes from monoblasts. megakaryocytes and platelets. erythrocytes from myeloid stem cells.

monocytes from monoblasts.