17. The Blood

The terms biconcave and anucleated apply to __________.

Which of the following is a protective function of blood?

Which of the following is a function of erythrocytes?

The percentage of total volume used to determine the number of erythrocytes in a blood sample is referred to as the __________.

The buffy coat that appears after a sample of blood has been centrifuged contains __________.

Which of the following factors has the greatest effect on making RBCs very efficient oxygen transporters?

The blood volume in an adult averages approximatelya. 1 L,b. 3 L,c. 5 L,d. 7 L.

Multiple ChoiceMore than one choice may apply.Which would lead to increased erythropoiesis?a. Chronic bleeding ulcerb. Reduction in respiratory ventilationc. Decreased level of physical activityd. Reduced blood flow to the kidneys

The hormonal stimulus that prompts red blood cell formation isa. serotonin,b. heparin,c. erythropoietin,d. thrombopoietin.

The formed elements of the blood include (a) plasma, fibrin, and serum, (b) albumins, globulins, and fibrinogen, (c) WBCs, RBCs, and platelets, (d) all of these.

All of the following are true of RBCs excepta. biconcave disc shape,b. life span of approximately 120 days,c. contain hemoglobin,d. contain nuclei.

Blood temperature is approximately___, and blood pH averages___. (a) 36 °C, 7.0, (b) 39 °C, 7.8, (c) 38 °C, 7.4, (d) 37 °C, 7.0

Plasma contributes approximately_____ percent of the volume of whole blood, and water accounts for percent of the plasma volume. (a) 55, 92, (b) 25, 55, (c) 92, 55, (d) 35, 72.

Blood proteins play an important part ina. blood clotting,b. immunity,c. maintenance of blood volume,d. all of the above.

Serum is (a) the same as blood plasma, (b) plasma minus the formed elements, (c) plasma minus the proteins, (d) plasma minus fibrinogen, (e) plasma minus the electrolytes