Posted: June 15th, 2022

Rio Salado BIO 160 – Which of the following is characteristic ofall leukocytes

1 of 25Which of the following is characteristic ofall leukocytes?They are nucleated.They have cytoplasmic granules.They are phagocytic.They are the most numerous of the formed elements.They are essential for clot formation.Question2 of 25Which of the following accurately describes plasma?It includes all the blood except the red blood cells.It makes up 30% of whole blood.It is the liquid portion of blood that includes the clotting factors.It is the liquid portion of blood including the formed elements.It contains the blood antigens that determine blood type.Question3 of 25Which of the following is the correct statement regarding blood cell formation?The main sites of blood cell production in adults are the spleen and liver.Before the seventh month of fetal development, yellow marrow is the main site of cell formation.Red marrow is the main site of blood cell formation throughout adult life.Yellow marrow is the main site of leukocyte formation.The lymph nodes and thymus are the site of all white blood cell formation.Question4 of 25What organ in the body regulates erythrocyte production?KidneyLiverBrainPancreasSpleenQuestion5 of 25Which of the following may trigger erythropoiesis?Increased tissue demand for oxygenDecreased tissue demand for oxygenIncreased number of RBCsMoving from high to low altitudeIncreased body temperatureQuestion6 of 25Why is the birth of an Rh positive baby to an Rh negative mother a potential health problem?The Rh negative mother will form antibodies that may affect that baby.The Rh negative mother will form antibodies that may affect a second Rh positive baby.The Rh negative mother will form antibodies that may affect a second Rh negative baby.The Rh negative mother will form antigens that will attack the red blood cells of that baby.The Rh negative mother will form antigens that will attack the red blood cells of a second negative baby.Question7 of 25Type O blood is considered the universal donor for which of the following reasons?Type O blood is the least common blood type.Type O blood contains no antigens and cannot cause a transfusion reaction.Type O blood contains no antibodies and cannot cause a transfusion reaction.Type O blood is more stable in storage.Type O blood contains both A and B antigens.Question8 of 25What is a transfusion reaction?Chills due to the donor blood being colder than normal body temperatureKidney shut down due to too much blood being infused at onceRBCs lyse and hemoglobin levels increase in the blood streamDehydration due to incompatible bloodAntibodies clog the tubules of the kidney resulting in painQuestion9 of 25What is anemia?When a body experiences lack of oxygen due to high elevation.When a body has too many red blood cells.When a body has poor oxygenation of blood.When a body has an abnormal number of white blood cells.When a body experiences respiratory distress.Question10 of 25Small purplish spots, called petechiae, indicate which disorder?AnemiaHemophiliaPhysiological jaundiceThrombocytopeniaThrombusQuestion11 of 25Which of the following describes leukemia?The number of WBCs and RBCs is decreased but all function normally.The number of WBCs and RBCs is abnormally high but all function normally.The number of WBCs is abnormally high, and number of RBCs is abnormally low.The number of WBCs is abnormally high, but the number of RBCs is normal.The number of WBCs and platelets is abnormally high.Question12 of 25What is the major function of the cardiovascular system?CommunicationEnergy productionMovementSupport and protectionTransportQuestion13 of 25What is the middle layer of the heart wall called?EndocardiumPericardiumMyocardiumEpicardiumMediastinumQuestion14 of 25Which statement best describes arteries?All carry oxygenated blood to the heart.All carry blood away from the heart.All carry blood toward the heart.Only large arteries are lined with endothelium.Only the pulmonary artery carries oxygenated blood.Question15 of 25What vessel has the primary function of permitting the exchange of nutrients and gases between the blood and tissue cells?ArteriolesArteriesVeinsVenulesCapillariesQuestion16 of 25Which of the following are involved directly in pulmonary circulation?Superior vena cavae, right atrium and left ventricleRight ventricle, pulmonary artery, and left atriumLeft ventricle, aorta, and inferior vena cavaRight atrium, aorta and left ventricleLeft atrium, aorta, superior vena cavaeQuestion17 of 25Which of the following describes the semilunar valves?They are open during heart relaxation.They are closed when the ventricles are contracting.They are forced open when the ventricles contract.They are forced open when the atria contract.They prevent backflow of blood between the atria and the ventricles.Question18 of 25What two systems serve to regulate heart activity?The autonomic nervous system and the ventricular impulse systemThe peripheral nervous system and the ventricular impulse systemThe autonomic nervous system and the central nervous systemThe autonomic nervous system and the extrinsic conduction systemThe autonomic nervous system and the intrinsic conduction systemQuestion19 of 25What is the name for the special tissue in the heart that starts each heart beat and sets the pace for the whole heart?Bundle of HisAV bundleAV nodeSA nodePurkinje fibersQuestion20 of 25What is the cardiac cycle?The events related to one heartbeat.The total amount of time if takes for one drop of blood to travel through the heart.The number of beats of the heart per minute.The events related to the flow of blood through the lungs.The events between the SA node impulse and the AV node impulse.Question21 of 25In what part of the cardiac cycle is the heart completely relaxed?At the beginning of ventricular systoleDuring ventricular systoleBetween diastole and systoleMid-to-late diastoleAfter diastoleQuestion22 of 25What effect does exercise have on cardiac output?It increases both the heart rate and the stroke volume.It decreases both the heart rate and the stroke volume.It increases the heart rate but decreases the stroke volume.It decreases the heart rate but increases the stroke volume.It only increases the heart rate.Question23 of 25What is the effect of epinephrine on heart rate?It causes a release of calcium and speeds up the heart rate.It mimics sympathetic nerve stimulation and speeds up the heart rate.It serves to slow down the intrinsic conduction system and slows down the heart rate.It increases blood volume, therefore decreases heart rate.It decreases blood volume, therefore increases heart rate.Question24 of 25What are heart murmurs?Incomplete closing of the valvesBlood leaking backwardBlood striking obstructionsIrregular closing of the valvesPartially clogged coronary arteriesQuestion25 of 25What is congestive heart failure?Pumping inefficiency resulting in poor circulationDamage to the AV node resulting in irregular heartbeatA rapid heart rate resulting in poor circulationLeakage between the left and right atria resulting in over pumping.Enlarged ventricles resulting in a slow heart rate

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