Chapter 19: Part 3

A bruise appears as a greenish spot in the skin because A) hemoglobin has leaked from the blood into the injury and hemoglobin has a green color. B) the heme group in the hemoglobin has broken down into biliverdin. C) bilirubin from iron recycling has built-up in the bruise. D) red blood cells lyse releasing biliverdin from inside. E) dead white blood cells accumulate at the site of injury.

the heme group in the hemoglobin has broken down into biliverdin.

The average life span of a red blood cell is A) 24 hours. B) 1 month. C) 4 months. D) about 1 year. E) many years.

4 months.

________ is a condition in which the oxygen-carrying capacity of the blood is reduced. A) Polycythemia B) Leukemia C) Anemia D) Leukopenia E) Thrombocytopenia

Anemia

In which of the following situations would you expect the blood level of bilirubin to be elevated? A) during coagulation B) an alcoholic with a damaged liver C) iron-deficient diet D) low hematocrit E) low blood volume

an alcoholic with a damaged liver

The function of hemoglobin is to A) carry dissolved blood gases. B) carry bicarbonate ion. C) aid in the process of blood clotting. D) produce antibodies. E) stimulate erythropoiesis.

carry dissolved blood gases.

The function of red blood cells is to A) carry oxygen from the cells to the lungs. B) carry carbon dioxide from the lungs to the body's cells. C) carry nutrients from the digestive system to the body's cells. D) defend the body against infectious organisms. E) carry oxygen to the cells and then carry away carbon dioxide.

carry oxygen to the cells and then carry away carbon dioxide.

The waste product bilirubin is produced from A) globin chains of hemoglobin. B) heme molecules plus iron. C) heme molecules lacking iron. D) iron found in hemoglobin molecules. E) abnormal proteins found in red blood cells.

heme molecules lacking iron.

More than 95 percent of the protein in a red blood cell is A) albumin. B) porphyrin. C) hemoglobin. D) immunoglobulin. E) fibrinogen.

hemoglobin.

Excess iron is stored in the liver and spleen as A) transferrin. B) urobilin and stercobilin. C) bilirubin and biliverdin. D) hemoglobin. E) hemosiderin and ferritin.

hemosiderin and ferritin.

If bile ducts are blocked, A) more bilirubin appears in the plasma. B) bilirubin appears in the saliva. C) more hemolysis takes place. D) more red blood cells are produced. E) more white blood cells are produced.

more bilirubin appears in the plasma.

The level of erythropoietin in the blood would rise due to all of the following except A) anemia. B) high altitude. C) as a consequence of hemorrhage. D) periods of fasting. E) when blood flow to the kidneys is disrupted.

periods of fasting.

In adults, the only site of red blood cell production, and the primary site of white blood cell formation, is the A) liver. B) spleen. C) thymus. D) red bone marrow. E) yellow bone marrow.

red bone marrow.

Which of the following would you expect to see in increased numbers in a peripheral blood sample after donating a unit of blood? A) fibrocytes B) platelets C) reticulocytes D) lymphocytes E) neutrophils

reticulocytes

Aged and damaged erythrocytes are broken down by macrophages in the A) spleen. B) liver. C) bone marrow. D) digestive tract. E) spleen, liver, and bone marrow.

spleen, liver, and bone marrow.

Each heme ring in hemoglobin encloses an atom of A) magnesium. B) calcium. C) iron. D) sodium. E) copper.

iron.

Mary is tested for the amount of hemoglobin in her blood. The test results indicate that her hemoglobin level is 16 g/dL of blood. This value indicates that A) she is suffering from anemia. B) she has fewer red blood cells than normal. C) her hematocrit is probably lower than normal. D) she may be suffering from a form of leukemia. E) her hemoglobin level is normal.

her hemoglobin level is normal.

A red blood cell that contains excessive amounts of hemoglobin would be called A) hyperchromic. B) normochromic. C) hypochromic. D) normocytic. E) macrocytic.

hyperchromic.

An obstruction in blood flow to the kidneys would result in A) pernicious anemia. B) renal anemia. C) increased erythropoiesis. D) decreased erythropoiesis. E) increased sensitivity to vitamin K.

increased erythropoiesis.

Pernicious anemia caused by a lack of intrinsic factor is specifically treated by A) oral doses of iron. B) injections of iron. C) oral doses of vitamin B12. D) injections of vitamin B12. E) blood transfusion.

injections of vitamin B12.

Eileen is a strict vegan and therefore eats no animal products. She develops an anemia that her doctor thinks is caused by a nutritional deficiency. Which of the following is the likeliest candidate? A) aplastic anemia B) iron-deficiency anemia C) sickle cell anemia D) vitamin K deficiency E) vitamin B6 deficiency

iron-deficiency anemia