Hemostasis and Anemia

Platelets: Select one: a. are also known as thrombocytes. b. are actually fragments of cells. c. play a role in preventing blood loss. d. can become sticky when exposed to connective tissue e. All of these choices are correct.

All of these choices are correct.

A man without von Willebrand Factor will have trouble: Select one: a. maintaining an adequate Oxygen supply in his blood b. Forming a platelet plug in an injured vessel c. Activating complement to destroy a pathogen d. Creating and breaking down fibrin

Forming a platelet plug in an injured vessel

The hematocrit measures: Select one: a. the number of red blood cells b. the hemoglobin content of blood c. the percentage of a given volume of blood that is made up of red cells d. the size of the red blood cells

the percentage of a given volume of blood that is made up of red cells

Hemoglobin: Select one: a. gives white blood cells their color. b. transports oxygen in the blood. c. is normally found in both the plasma and erythrocytes. d. catalyzes the reaction that forms carbonic acid. e. is only used once then decomposed.

transports oxygen in the blood.

n hemolytic anemia, low hematocrit is caused by: Select one: a. blood loss b. excessive red cell destruction c. iron deficiency d. impaired red cell production e. all of the above are correct

excessive red cell destruction

Erythropoiesis does not require: Select one: a. iron. b. vitamin B12. c. folate. d. vitamin K. e. All of these are required.

vitamin K.

Anemia is most accurately defined as: Select one: a. hemorrhage b. low numbers of red blood cells and/or hemoglobin c. red cell hemolysis d. an iron deficiency state

low numbers of red blood cells and/or hemoglobin

Iron deficiency anemia is characterized as: Select one: a. normocytic, normochromic b. microcytic, hypochromic c. macrocytic, normochromic d. microcytic, normochromic

microcytic, hypochromic

Erythropoietin: Select one: a. is a product of the kidney. b. inhibits the production of erythrocytes. c. is produced in response to increased blood pressure. d. is found both in the plasma and inside red blood cells. e. is produced by the red bone marrow.

is a product of the kidney.

Which type of ABO antibodies would a person with type O blood have? Select one: a. A b. AB c. B d. O

AB

Sickle cell anemia would be classified as what type of anemia? Select one: a. Iron deficiency anemia b. Hemolytic anemia c. Blood loss anemia d. Anemia due to deficient red cell production

Hemolytic anemia

What is the main stimulus for red cell production? Select one: a. Hypoxia b. Low iron level c. Exercise d. Senile red blood cells

Hypoxia

Which statement regarding sickle-cell anemia is FALSE? Select one: a. The inherited abnormality is manifested as sickle cell trait in those heterozygous for the alteration and as sickle cell disease in those who are homozygous. b. The pain of sickle cell crisis is the result of vessel occlusions. c. People with sickle cell trait experience iron deficiency.

People with sickle cell trait experience iron deficiency.

In thalassemia, erythrocytes are destroyed rapidly because they have: Select one: a. A high O2 affinity b. abnormal hemoglobin molecules c. defective cell membranes d. nuclei

abnormal hemoglobin molecules

Bilirubin is liberated from red blood cells as they are broken down. Which of the following statements is true as it relates to bilirubin? Bilirubin: Select one: a. is derived from hemoglobin in red blood cells b. is the pigment that gives bile its color c. can deposit in the skin and eyes d. must be removed from the plasma and conjugated in the liver to render it water soluble so that it can be eliminated in bile e. all of these statements are true

all of these statements are true

Jaundice occurs in: Select one: a. diseases that lower serum bilirubin, such as liver disease b. anemias that cause a rapid destruction of red blood cells c. iron-deficiency anemia d. all of the above

anemias that cause a rapid destruction of red blood cells

Aplastic anemia is caused by: Select one: a. iron deficiency b. a mutation c. bone marrow depression d. lymphoma

bone marrow depression

Which of the following would lead to increased erythropoiesis? Select one: a. increased environmental O2 levels b. decreased O2 supply to the kidneys c. increased blood pH d. increased blood pressure e. increased CO2 levels

decreased O2 supply to the kidneys

Conditions that predispose to sickling of hemoglobin in persons with sickle cell anemia are those that: Select one: a. impair red blood cell maturation b. increase the iron content of blood c. increase the oxygen content of the blood d. increase the level of deoxygenated hemoglobin

increase the level of deoxygenated hemoglobin

The cause of pernicious anemia is: Select one: a. the absence of extrinsic factor b. the absence of intrinsic factor c. lack of vitamin B12 in the diet d. Iron deficiency

the absence of intrinsic factor