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chapter 7

QuestionAnswer
Red blood cells are the most abundant cells in the human body. true
Unlike white blood cells, red blood cells have a nucleus. false
Red blood cells have a short lifespan of only 120 days. true
Erythropoeisis is regulated by the hormone erythropoietin. true
In physical examinations, the major sign of anemia is pallor. true
Iron deficiency is the leading cause of anemia worldwide. true
The etiology of anemia of chronic disease most often is a defect in erythropoesis. true
The principal dietary sources of vitamin B12 include fruits and vegetables. false
Patients who have heterozygous sickle cell trait have the more severe form known as sickle cell anemia. false
Thalassemias are the most common genetic disorder in the world. true
In relative polycythemia, the increase in red blood cell mass is due to a loss of plasma volume. true
The pathogenesis of DIC involves the release of thrombin into the systemic circulation. true
Eosinophilia-Myalgia syndrome has been related to ingestion of the dietary supplement L-tryptophan. true
_____, or red blood cells, make up about half of the blood's volume. Erythrocytes
With no _____, red blood cells do not grow or repair themselves. nucleus
In the lungs, hemoglobin binds to oxygen, becoming _____. oxyhemoglobin
The primary function of _____ is to defend tissues against infections and foreign substances. leukocytes
_____ are produced in the bone marrow and are essential for blood clotting. Platelets
Risk factors for _____ anemia include excessive blood loss, menstruation, pregnancy, and rapid growth during adolescence. iron-deficiency
The _____ of iron-deficiency anemia occurs when the iron stores of the body become depleted. second
In some cases of anemia of chronic disease, therapy with the hormone _____ may be used. erythropoietin
The _____ are caused by impaired DNA synthesis. megaloblastic anemias
Symptoms of _____ include abdominal distress, nausea and vomiting, and burning of the tongue. pernicious anemia
Folic acid is synthesized by many different types of plants and _____. bacteria
_____ is a reduction in circulating red blood cells that is caused by accelerated destruction of red blood cells. Hemolytic anemia
In sickle cell disease, red blood cells contain an abnormal form of _____. hemoglobin
In sickle cell disease, tissue death caused by _____ causes great pain and may lead to organ failure. ischemia
The most severe forms of thalassemia produce severe, life-threatening _____. anemia
The signs and symptoms of _____ result from increased viscosity of the blood. polycythemia vera
Disorders of _____ are commonly known as bleeding disorders. hemostasis
_____ can usually be corrected by treating the underlying cause. Thrombocytopenia
Idiopathic thrombocytopenic purpura is an _____ disease. autoimmune
Vitamin _____ is a fat-soluble vitamin that is synthesized by intestinal bacteria. K
Created by: user-2008470
 

 



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