Question: Which compound serves as an enzyme in the blood coagulation mechanism?
Answer Choices: A. Prothrombin B. Fibrinogen C. Thrombin D. Fibrin
Answer: C. Thrombin
Question: Name the inherited disorder in which the small intestine absorbs 10x times the normal amount of iron, leading to a toxic buildup of iron in body tissues.
Answer Choices: A. Polycythemia B. Thrombocytopenia C. Hemolytic anemia D. Hemochromatosis
Answer: D. Hemochromatosis
Question: What does the Frank-Starling law of the heart state?
Answer Choices: A. The lesser the blood volume, the greater the force of ventricular contraction B. The greater the length of myocardial fibers, the greater the force with which they contract C. The greater the peripheral resistance, the lesser the ventricular contraction D. The lesser the blood viscosity, the lesser the force of ventricular contraction
Answer: B. The greater the length of myocardial fibers, the greater the force with which they contract
Question: What circuit sends oxygen-rich blood from the heart to all cells of the body, removes carbon dioxide and other wastes, and returns blood to the heart?
Answer Choices: A. Portal circuit B. Pulmonary circuit C. Visceral circuit D. Systemic circuit
Answer: D. Systemic circuit
Question: What classes of antibodies are involved in activation of complement?
Answer Choices: A. IgA and IgD B. IgG and IgE C. IgM and IgA D. IgG and IgM
Answer: D. IgG and IgM
Question: What is the function of plasma proteins in capillary exchange?
Answer Choices: A. To maintain the hydrostatic pressure of the blood B. To decrease the osmotic pressure of the blood C. To decrease the hydrostatic pressure of the blood D. To maintain the osmotic pressure of the blood
Answer: D. To maintain the osmotic pressure of the blood
Question: What might trigger spasms of the smooth muscle in a blood vessel wall?
Answer Choices: A. Deficiency of plasma globulins B. Parasympathetic stimulation C. Injury to blood vessel D. Formation of a blood clot within vessel
Answer: C. Injury to blood vessel
Question: What vein drains blood from the face and scalp?
Answer Choices: A. External jugular vein B. Inferior vena cava C. Cephalic vein D. Subclavian vein
Answer: A. External jugular vein
Question: Define the term hematocrit.
Answer Choices: A. The pigment that gives red blood cells their color B. A disease caused by abnormal red blood cell levels C. The percent of red blood cells in a blood sample D. A clotting factor
Answer: C. The percent of red blood cells in a blood sample
Question: Urea, uric acid, and creatine are examples of which of the following?
Answer Choices: A. Nonprotein nitrogenous substances B. Plasma proteins C. Gamma globulins D. Hormones
Answer: A. Nonprotein nitrogenous substances
Question: What statement applies to people with blood type A+?
Answer Choices: A. They have A antigens and Rh antigens. B. They have B antigens and anti-Rh antibodies. C. They have A antigens and anti-Rh antibodies. D. They have anti-A and anti-Rh antibodies.
Answer: A. They have A antigens and Rh antigens.
Question: The thoracic duct receives lymph from which of the following regions?
Answer Choices: A. Right upper limb B. Right head and neck C. Right thoracic cavity D. Right lower limb
Answer: D. Right lower limb
Question: When taking a blood pressure, a vessel in the arm is occluded, and sounds of blood flow downstream are heard through a stethoscope placed on what vessel?
Answer Choices: A. Radial a. B. Brachial a. C. Ulnar a. D. Median cubital v.
Answer: B. Brachial a.
Question: The accumulation of what product of erythrocyte breakdown can result in the condition called jaundice?
Answer Choices: A. Bilirubin B. Iron C. Biliverdin D. Globin
Answer: A. Bilirubin
Question: What part of the conduction system fibers extend into the papillary muscles?
Answer Choices: A. AV node B. Purkinje fibers C. SA node D. Bundle branches
Answer: B. Purkinje fibers
Question: What element is part of hemoglobin molecules?
Answer Choices: A. Iodine B. Calcium C. Iron D. Copper
Answer: C. Iron
Question: What process requires the conversion of plasminogen to plasmin?
Answer Choices: A. Agglutination B. Hematopoiesis C. Fibrinolysis D. Coagulation
Answer: C. Fibrinolysis
Question: The renal veins drain their blood into what blood vessel?
Answer Choices: A. Hepatic vein B. Inferior vena cava C. Hepatic portal vein D. Celiac trunk
Answer: B. Inferior vena cava
Question: Which of the following lymphatic tissues/structures contain immune cells that are most likely to initiate an immune response against food-borne pathogens?
Answer Choices: A. Lymph nodes B. Thymus C. Mucosa-associated lymphoid tissue (MALT) D. Spleen
Answer: C. Mucosa-associated lymphoid tissue (MALT)
Question: Which situation would lead to a transfusion reaction?
Answer Choices: A. A patient with type AB blood receives transfusion of type A blood B. A patient with type B blood receives transfusion of type B blood C. A patient with type O blood receives transfusion of type A blood D. A patient with type A blood receives transfusion of type O blood
Answer: C. A patient with type O blood receives transfusion of type A blood
Question: In a centrifuged blood sample, what forms the “buffy coat”?
Answer Choices: A. Plasma B. Red blood cells C. White blood cells and platelets D. All of the formed elements together
Answer: C. White blood cells and platelets
Question: What is the function of the hormone thrombopoietin?
Answer Choices: A. It inhibits platelet formation. B. It stimulates platelet formation. C. It stimulates thrombus formation. D. It inhibits megakaryocyte formation.
Answer: B. It stimulates platelet formation.
Question: What feature of erythrocytes (RBCs) provides increased surface area for oxygen diffusion?
Answer Choices: A. Presence of microvilli B. Biconcave shape C. Overlapping folds in the plasma membrane D. Presence of antigens
Answer: B. Biconcave shape
Question: What plasma antibodies are present in type O blood?
Answer Choices: A. Anti-A antibodies only B. Anti-B antibodies only C. Both anti-A and anti-B antibodies D. Neither anti-A nor anti-B antibodies
Answer: C. Both anti-A and anti-B antibodies
Question: What two vitamins are essential for DNA synthesis and therefore significantly influence red blood cell production?
Answer Choices: A. Folic acid and vitamin B12 B. Vitamins A and C C. Folic acid and vitamin D D. Vitamins A and D
Answer: A. Folic acid and vitamin B12