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Ch 18 Blood And Cha 19 Heart

38 Questions
Ch 18 Blood And Cha 19 Heart
Questions and Answers
  • 1. 
    These are the least abundant formed elements,
    • A. 

      Erythrocytes

    • B. 

      Basophils

    • C. 

      Neutrophils

    • D. 

      Eosinophils

    • E. 

      Platelets

  • 2. 
    The Volume of blood ejected by each ventricle in one minute is called
    • A. 

      The cardiac reserve

    • B. 

      The Cardiac output

    • C. 

      The stroke volume

    • D. 

      The afterload

    • E. 

      The preload

  • 3. 
    ____________ is the most abundant protein in Plasma
    • A. 

      Creatine

    • B. 

      Insulin

    • C. 

      Bilirubin

    • D. 

      Creatinine

    • E. 

      Albumin

  • 4. 
    Mitral valve prolapse (MVP) generates a murmur associated with the ________ heart sound that occures when the ________.
    • A. 

      Dupp (S2); ventricles relax

    • B. 

      Dupp (S2); atria relax

    • C. 

      Lubb (S1); atria contract

    • D. 

      Lubb (s1); ventricles relax

    • E. 

      Lubb (S1); ventricles contract

  • 5. 
    These are features of cardiac muscle finers except
    • A. 

      They have about the same endurance as skeletal muscle fibers.

    • B. 

      They depend almost exclusively on aerobic respiration

    • C. 

      They are very rich in myoglobin.

    • D. 

      They are rich in glycogen

    • E. 

      They have huge mitochondria

  • 6. 
    The _________ is  the pacemaker that initiates each heart beat.
    • A. 

      Sinoatrial (SA) Node

    • B. 

      Autonomic nervous system

    • C. 

      Sympatheic division of nervous system

    • D. 

      Atrioventricular (AV) node

    • E. 

      Cardiac conducation system

  • 7. 
    This is the correct sequence of events of the cardiac cycle.
    • A. 

      Ventricular filling → ventricular ejection→ isovolumetric contraction → isovolumetric rekaxation.

    • B. 

      Ventricular filling → isovolumetric relaxtion Ventricular filling → isovolumetric contraction → ventricular ejection.

    • C. 

      Ventricular filling → isovolumetric relaxation → ventricular ejection → isovolumetric contraction.

    • D. 

      Ventricular filling → isovolumetric contraction → isovolumetric relaxtion → ventricular ejection.

    • E. 

      Ventricular filling → isovolumetric contraction → ventricular ejection → isovolumetric relaxation.

  • 8. 
    Pericardial fluid is found between
    • A. 

      The visceral pericardium and the epicardium

    • B. 

      The visceral pericardium and the myocardium

    • C. 

      Myocardium and endocardium

    • D. 

      Epicardium and myocardium

    • E. 

      The parietal and visceral membranes

  • 9. 
    Cardiac muscle shares this feature with skeletal muscle
    • A. 

      Cardiac muscle fibers communicate by electrical (gap) junctions

    • B. 

      Some cardiac muscle fibers are autorhythmic

    • C. 

      Cardiac muscle fibers have striations

    • D. 

      All cardiac muscle fibers depend on nervous stimulation

    • E. 

      Cardiac muscle fibers are joined end to end by intercalated discs

  • 10. 
    Cardioinhibitory centers in the __________ receive input from __________.
    • A. 

      Thalamus; chemoreceptors in the medulla oblongata.

    • B. 

      Pons; baroreceptors in the internal carotid

    • C. 

      Cortex; proprioceptors in the muscles

    • D. 

      Hypothalamus; propriocepters in the joints

    • E. 

      Medulla oblongata; chemoreceptors in the pernicious anemia.

  • 11. 
    A deficency of _______ can cause pernicious anemia.
    • A. 

      Vitamin B12

    • B. 

      Iron

    • C. 

      Folic acid

    • D. 

      EPO secretion

    • E. 

      Vitamin C

  • 12. 
    Differential count of ________ typically increases in response to bacterial infection
    • A. 

      Erythrocytes

    • B. 

      Neutrophils

    • C. 

      Monocytes

    • D. 

      Eosinophils

    • E. 

      Basophils.

  • 13. 
    The__________preforms the work of the heart.
    • A. 

      Pericardial cavity

    • B. 

      Endocardium

    • C. 

      Myocardium

    • D. 

      Epicardium

    • E. 

      Fiberous skeleton

  • 14. 
    Anemia has these potential consequences except
    • A. 

      The individual is lethargic

    • B. 

      More fluid transfers from the bloodstream to the intercellular space

    • C. 

      Blood viscosity is increased

    • D. 

      Blood osmolarity is reduced

    • E. 

      Blood resistance to flow is reduced

  • 15. 
    This figure shows the events of the cardia cycle. What does "4" represent?
    • A. 

      AV valve closing

    • B. 

      Both aortic and AV valves opening

    • C. 

      Aortic valve closing

    • D. 

      AV valve opening

    • E. 

      Aortic valve opening

  • 16. 
    This figure shows the e vents of the cardiac cycle. At 0.2 sec in the Gragh _______.
    • A. 

      The aortic Valve in open

    • B. 

      The AV valve is open

    • C. 

      The ventricles have reached end-diastolic volume

    • D. 

      The ventricles are in systole

    • E. 

      The ventricles are in the isovolumetric phase

  • 17. 
    Most of the ventricle fillinf occurs
    • A. 

      During atrial diastole.

    • B. 

      During atrial systole

    • C. 

      During ventricular systole

    • D. 

      During isovolumetric contraction

    • E. 

      When the AV valve is closed

  • 18. 
    The main reason why an individual AB, Rh-negative cannot donarw blood to an individual A, Rh-positive is because
    • A. 

      Anti-D antibodies in the donor will agglutinate RBC of the recipient

    • B. 

      Anto-B antibodies in rhw donor ill agglutinate RBCs of the recipient

    • C. 

      Anti-A antibodies in the recipient will agglutinate RBCs of the donor.

    • D. 

      Anti-B antibodies in the recipient will agglutinate RBCs of the donor.

    • E. 

      Anti-B antibodies in the donor will agglutinate RBCs of the recipient

  • 19. 
    An individual has type B, Rh-positive blood. The individual has _______ antigen can produce anti- ________ antibody(ies)
    • A. 

      D;A and B

    • B. 

      A and D;B

    • C. 

      B and D; A

    • D. 

      B; A and D

    • E. 

      A; B and D

  • 20. 
    Which of these is not part of the cardiac conduction system.
    • A. 

      The tendinous cords (TC)

    • B. 

      The Purjinje fiber

    • C. 

      The sinoatrial (SA) node

    • D. 

      The atrioventicular (AV) bundle (bubdle of His)

    • E. 

      The atrioventicular (AV) node

  • 21. 
    Any abnormal cardia rhythm is called
    • A. 

      Ectopic focus

    • B. 

      Arrhythmia

    • C. 

      Nodal rhythm

    • D. 

      Heart block

    • E. 

      Sinus rhythm

  • 22. 
    Atrial depolarization begins during
    • A. 

      Atria systole

    • B. 

      The T wave

    • C. 

      The first heart sound

    • D. 

      The QRS complex

    • E. 

      The P wave

  • 23. 
    This is the correct path of an electrial excitation from the pacemaker to a cardiocyete in the left ventricle.
    • A. 

      Sinoatrial (SA) node - atrioventricular (AV) bundle - atrioventricular (AV)node - Purjinje fibers - cardiocyte in LV

    • B. 

      Sinoatrial (SA) node - atrioventricular (AV)node - atrioventricular (AV)bundle- purjinje fiber - cardiocyte in LV

    • C. 

      Atrioventricular (AV) node - purjinje fiber- atrioventricular (AV) bubdle - sinoatrial (SA) node- Cardiocyte in LV

    • D. 

      Sinoatrial (SA) node - atrioventricular (AV)node - purjinje fiber- atrioventricular (AV)bundle[ cardiocyte in LV

    • E. 

      Atrioventricular (AV) node - sinoatrial (SA) node - atrioventricular (AV) bundle - purjinje finer cardiocyte in LV

  • 24. 
    The plateau in the action potential of cardiac muscle results from the action of
    • A. 

      Fast CO2+ channels

    • B. 

      K+ inflow.

    • C. 

      Na+ Inflow

    • D. 

      K+ outflow

    • E. 

      Slow Ca2+ channels

  • 25. 
    These are the most abundant agranulocytes
    • A. 

      Monocytes

    • B. 

      Neutrophils

    • C. 

      Eosinophils

    • D. 

      Lymphocytes

    • E. 

      Marcrophages

  • 26. 
    This figure shows the principal coronary blood vessels. which one is the left coronory artery (LCA)?
    • A. 

      11

    • B. 

      1

    • C. 

      8

    • D. 

      3

    • E. 

      5

  • 27. 
    Type AB blood has __________ RBC antigen(s)
    • A. 

      No

    • B. 

      Anti-A and anti-B

    • C. 

      Anti A

    • D. 

      Anti B

    • E. 

      A and B

  • 28. 
    The cessation of bleeding is specifically called
    • A. 

      Homeostasis

    • B. 

      Hemeostats

    • C. 

      Blood clotting

    • D. 

      Vascular spasm

    • E. 

      Platelet plug formation

  • 29. 
    The Frank-Starling law of the heart states that stroke volume us proportional to
    • A. 

      Contractility

    • B. 

      The end-systolic volume

    • C. 

      The heart rate

    • D. 

      The end-diastolic volume

    • E. 

      The afterload

  • 30. 
    The buffy coat does not contain
    • A. 

      Lymphocytes

    • B. 

      Platelets

    • C. 

      Erythricytes

    • D. 

      Granulocytes

    • E. 

      Agranulocytes

  • 31. 
    Mitral valve stenosis causes blood to leak back into the_______ when ventricles contract.
    • A. 

      Pulmonary trunk

    • B. 

      Right atrium

    • C. 

      Left atrium

    • D. 

      Aorta

    • E. 

      Pulmonary arteries

  • 32. 
    A total count above _______________ WBCs/L is called leukocytosis.
    • A. 

      10,000

    • B. 

      100,000

    • C. 

      1,000

    • D. 

      5,000

    • E. 

      50,000

  • 33. 
    Correction of hypoxemia is regulated by
    • A. 

      A cascade effect

    • B. 

      A negative feedback loop

    • C. 

      An enzymatic amplification

    • D. 

      A positive feedback loop

    • E. 

      A self- ampylifying mechanism

  • 34. 
    Isovolumetric contraction occures during the _________ of the electrocardiogram.
    • A. 

      S-T segment

    • B. 

      P-Q segment

    • C. 

      T wave

    • D. 

      P wave

    • E. 

      R wave

  • 35. 
    ________ carry oxygen-poor blood
    • A. 

      Pulmonary veins and vena cavae

    • B. 

      Venae cavae and pulmonary veins

    • C. 

      Pulmonary veins and pulmonary arteries

    • D. 

      Aorta and vena cavae

    • E. 

      Aorta and pulmonary veins

  • 36. 
    Assume that the left venticale of a child's hearts has an EDV =90mL,and ESV=60mL, and cardiac ouput of  2,400 mL/min. His SV and HR are
    • A. 

      SV=30 mL/beat, HR=80bpm.

    • B. 

      SV=40 mL/beat, HR= 60bpm.

    • C. 

      SV=150 mL/beat, HR= 16bpm.

    • D. 

      SV=80 mL/beat, HR= 30bpm.

    • E. 

      SV=16 mL/beat, HR= 150bpm.

  • 37. 
    The long absolute refractory period
    • A. 

      Makes the heart prone to arrhythmias

    • B. 

      Prevents the occurrence of ectopic focuses

    • C. 

      Ensures a short twitch

    • D. 

      Prevents tetanus

    • E. 

      Causes the pacemkaer potential

  • 38. 
    This figure shows electical activity of the Sa node,_____ indicate(s) when calcium enters  the myocytes
    • A. 

      2

    • B. 

      1 and 2

    • C. 

      3

    • D. 

      1

    • E. 

      2 and 3

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