A&pii Exam1

52 Questions | Attempts: 118
Share
Quiz Flashcard
SettingsSettings
Please wait...
  • 1/52 Questions

    Assume that one ventricle of a child's heart has an EDV of 90 mL and an ESV of 60 mL. What is the child's stroke volume?

    • A) 60 mL
    • B) 30 mL
    • C) 150 mL
    • D) 90 mL
    • E) 120 mL
Please wait...

Quiz Preview

  • 2. 

    Where does the cardiac cycle typically begin?

    • A) sin-atrial (SA) node

    • B) antri-ventricular (AV) node

    • C) bundle branches

    • D) Purkinje fibers

    • E) brainstem cardivascular center

    Correct Answer
    A. A) sin-atrial (SA) node
  • 3. 

    An increase in stroke volume due to an increased venous return represents which mechanism for increasing ventricular contraction force?

    • A) increased afterload

    • B) increased preload (Frank-Sterling)

    • C) increased contractility

    • D) increased total peripheral resistance

    • E) increased end systolic volume

    Correct Answer
    A. B) increased preload (Frank-Sterling)
  • 4. 

    The term used to describe an elevated heart rate is?

    • A) fibrillation

    • B) bradycardia

    • C) arrhythmia

    • D) tachycardia

    • E) sinus rhythm

    Correct Answer
    A. D) tachycardia
  • 5. 

    Which effect could lead to a decrease in blood pressure?

    • A) increased sympathetic stimulation of blood vessels

    • B) increased blood volume

    • C) increased venous return

    • D) increased parasympathetic stimulation of the heart

    • E) increased activity of the skeletal muscle pump

    Correct Answer
    A. D) increased parasympathetic stimulation of the heart
  • 6. 

    The QRS complex of a normal electrocardiogram indicates?

    • A) atrial depolarization

    • B) atrial repolarization

    • C) ventricule depolarization

    • D) ventricular repolarization

    • E) none of the above

    Correct Answer
    A. C) ventricule depolarization
  • 7. 

    During one cardiac cycle where is the highest maximum pressure achieved?

    • A) left atrium

    • B) left ventricle

    • C) right atrium

    • D) right ventricle

    • E) aorta

    Correct Answer
    A. B) left ventricle
  • 8. 

    Drugs that increase cardiac contractility are said to be?

    • A) myogenic

    • B) negative inotropic

    • C) positive inotropic

    • D) negative chronotropic

    • E) positive chronotropic

    Correct Answer
    A. C) positive inotropic
  • 9. 

    The T-wave of a normal electrocardiogram indicates?

    • A) atrial depolarization

    • B) atrial repolarization

    • C) ventricular depolarization

    • D) ventricular repolarization

    • E) atrial & ventricular repolarization

    Correct Answer
    A. D) ventricular repolarization
  • 10. 

    The hematocrit is used to assess the?

    • A) volume of the plasma in a blood sample

    • B) buffy coat volume

    • C) packed red blood cell volume

    • D) leukocyte volume

    • E) volume of serum in a blood sample

    Correct Answer
    A. C) packed red blood cell volume
  • 11. 

    Where would you expect to find the origin of the left and right coronary arteries?

    • A) just above the pulmonary semilunar valve

    • B) just above the aortic semilunar valve

    • C) just below the pulmonary semilunar valve

    • D) just below the pulmonary semilunar valve

    • E) right above the pulmonary semilunar valve & left above the aortic semilunar valve

    Correct Answer
    A. B) just above the aortic semilunar valve
  • 12. 

    The vagus nerves mediate parasympathetic regulation of the heart by the cardiac control centers. If the vagus nerves were stimulated with an electrode, the heart rate would:

    • A) remain unchanged

    • B) decrease

    • C) increase

    • D) alternatively speed-up and slow-down

    • E) none of the above

    Correct Answer
    A. B) decrease
  • 13. 

    Which change would decrease blood flow resistance the most?

    • A) decrease the vessel radius by half

    • B) double the vessel radius

    • C) increase the pressure different (delta P)

    • D) double the vessel length

    • E) increase the hematocrit from 40% to 50%

    Correct Answer
    A. B) double the vessel radius
  • 14. 

    The adrenergic receptors that directly mediate increases in the heart rate and contractility of the heart are classified as:

    • A) alpha-1

    • B) beta-1

    • C) beta-2

    • D) beta-3

    • E) none of the above

    Correct Answer
    A. B) beta-1
  • 15. 

    A blood vessel made-up of only endothelial cells and their basal lamina would be classified as?

    • A) metarteriole

    • B) muscular venule

    • C) capillary

    • D) arteriole

    • E) elastic artery

    Correct Answer
    A. C) capillary
  • 16. 

    Even though vessel radius decreases, the cross-sectional area of a capillary bed increases, causing blood flow velocity to:

    • A) increase

    • B) decrease

    • C) stay the same

    • D) decrease, then increase

    • E) increase/decrease

    Correct Answer
    A. B) decrease
  • 17. 

    Atrial filling and contraction occurs prior to initiation of ventricular contraction due to a signal conduction delay where?

    • A) SA node

    • B) AV node

    • C) Bundle of His

    • D) bundle branches

    • E) Purkinje fibers

    Correct Answer
    A. B) AV node
  • 18. 

    Someone with Type-B blood would have reduced risk of a transfusion reaction if the donor was type?

    • A) AB or O

    • B) B or O

    • C) A or O

    • D) A and AB

    • E) B and AB

    Correct Answer
    A. B) B or O
  • 19. 

    Parasympathetic nervous system effects on heart-rate are mediated by which SA node receptors?

    • A) beta-1

    • B) beta-2

    • C) nicotinic

    • D) muscarinic

    • E) alpha-1

    Correct Answer
    A. D) muscarinic
  • 20. 

    An elevated reticulocyte count would indicate overproduction of which cell type?

    • A) neutrophils

    • B) eosinophils

    • C) basophils

    • D) erythrocytes

    • E) lymphocytes

    Correct Answer
    A. D) erythrocytes
  • 21. 

    Identify the correct blood flow pathway

    • A) RA-tricuspid valve-RV-aortic semilunar valve-aorta

    • B) LA-tricuspid valve-LV-pulmonary semilunar valve-aorta

    • C) LA-bicuspid valve-LV-aortic semilunar valve-aorta

    • D) RA-bicuspid valve-RV-aortic semilunar valve-aorta

    • E) LA-tricupid valve-LV-pulmonary semilunar valve-aorta

    Correct Answer
    A. C) LA-bicuspid valve-LV-aortic semilunar valve-aorta
  • 22. 

    An increase in ventricular contractile force due to sympathetic nervous system stimulation would be terms an increase in?

    • A) preload

    • B) cardiac output

    • C) contractility

    • D) pressure

    • E) none of the above

    Correct Answer
    A. C) contractility
  • 23. 

    In a typical blood smear which white blood cell is the most prevalent?

    • A) lymphocytes

    • B) monocytes

    • C) neutrophils

    • D) eosinophils

    • E) basophils

    Correct Answer
    A. C) neutrophils
  • 24. 

    Which heart valve opens at the end of the left ventricular isovolemic contraction phase?

    • A) mitral valve

    • B) tricuspid valve

    • C) aortic semilunar valve

    • D) pulmonary semilunar valve

    • E) venous valves

    Correct Answer
    A. C) aortic semilunar valve
  • 25. 

    Which effect would not decrease the oxygen transporting capacity of the blood?

    • A) iron deficiency

    • B) vitamin B deficiency

    • C) hemorrhage

    • D) folic and deficiency

    • E) erythropoietin overproduction

    Correct Answer
    A. E) erythropoietin overproduction
  • 26. 

    Pernicious anemia results from?

    • A) hypoxemia

    • B) iron deficiency

    • C) malaria

    • D) lack of intrinsic factor

    • E) Rh incompatibility

    Correct Answer
    A. D) lack of intrinsic factor
  • 27. 

    A heart rate of 75 bpm and the presence of P waves without accompanying QRS complexes suggest?

    • A) SA node damage

    • B) ventricular fibrillation

    • C) cor pulmonale

    • D) extra systole

    • E) AV node damage

    Correct Answer
    A. E) AV node damage
  • 28. 

    An increase in ventricular contractile force due to Frank-Starling mechanisms would be termed an increase in?

    • A) preload

    • B) cardiac output

    • C) contractility

    • D) pressure

    • E) none of the above

    Correct Answer
    A. A) preload
  • 29. 

    According to the Frank-Starling mechanism of the heart,

    • A) the left ventricle ejects a larger volume of blood with each systole that the right ventricle

    • B) the intrinsic rate of the heart's pacemaker is 100 beats/min

    • C) cardiac output increases as heart rate increases

    • D) stroke volume increases with increased venous return

    • E) both ventricles contract simultaneously

    Correct Answer
    A. D) stroke volume increases with increased venous return
  • 30. 

    The blood contained in a ventricle during the isovolumetric relaxation phase is?

    • A) end systolic volume (ESV)

    • B) end diastolic volume (EDV)

    • C) stroke volume (VS)

    • D) ejection fraction

    • E) none of the above

    Correct Answer
    A. A) end systolic volume (ESV)
  • 31. 

    The Frank-Starling mechanism describes the relationship between:

    • A) end-diastolic volume and heart rate

    • B) end-diastolic volume and stroke volume

    • C) end-systolic volume and heart rate

    • D) end-systolic volume and stroke volume

    • E) contractility and stroke volume

    Correct Answer
    A. B) end-diastolic volume and stroke volume
  • 32. 

    Aortic arch stretch receptors that are sensitive to changes in vascular pressure are termed:

    • A) pressoreceptors

    • B) chemoreceptors

    • C) peripheral resistance

    • D) heart rate

    • E) none of the above

    Correct Answer
    A. B) chemoreceptors
  • 33. 

    Which class of blood vessels serves as the primary determinant of the total peripheral resistance (TPR) and therefore blood pressure?

    • A) elastic arteries

    • B) muscular arteries

    • C) arterioles

    • D) capillaries

    • E) venules

    Correct Answer
    A. C) arterioles
  • 34. 

    Hemolytic disease of a newborn occurs when a pregnant woman develops an immune response against which antigen (Ag)?

    • A) A-Ag

    • B) B-Ag

    • C) AB-Ag

    • D) D-Ag

    • E) O-Ag

    Correct Answer
    A. D) D-Ag
  • 35. 

    Serum differed from plasma in that serum lacks which component?

    • A) fibrinogen

    • B) immunoglobulins

    • C) albumin

    • D) globulins

    • E) none of the above

    Correct Answer
    A. A) fibrinogen
  • 36. 

    Which catecholamine receptor regulated vascular smooth muscle tone via the IP3 and DAG second messenger system?

    • A) alpha 1

    • B) alpha 2

    • C) beta 1

    • D) beta 2

    • E) none of the above

    Correct Answer
    A. A) alpha 1
  • 37. 

    Carotid sinus baroreceptor and carotid body chemoreceptor sensation is principally mediated by which pathway?

    • A) Cranial nerve IX Glossopharyngeal afferent fibers

    • B) cranial nerve I Glossopharyngeal efferent fibers

    • C) cranial nerve X Vagus afferent fibers

    • D) cranial nerve X Vagus efferent fibers

    • E) sympathetic efferent fibers

    Correct Answer
    A. A) Cranial nerve IX Glossopharyngeal afferent fibers
  • 38. 

    The epicardium is actually the same as which layer

    • A) visceral pericardium

    • B) fibrous pericardium

    • C) parietal pericardium

    • D) endothelium

    • E) endocardium

    Correct Answer
    A. A) visceral pericardium
  • 39. 

    During exercise, skeletal muscle total blood flow increases 12-fold or more. What is the basis for this dramatic increase in blood flow?

    • A) increase in total peripheral resistance

    • B) increase in cardiac output

    • C) change in blood flow distribution

    • D) A and B

    • E) B and C

    Correct Answer
    A. E) B and C
  • 40. 

    The most important determinant of "long-term" regulation of blood pressure would be:

    • A) cardiac output

    • B) blood volume

    • C) peripheral resistance

    • D) heart rate

    • E) none of the above

    Correct Answer
    A. B) blood volume
  • 41. 

    A preserved pig heart with a complete pericardium contains a pin passing from the outer-most layer into the lumen of the left ventricle. What is the correct order of the  layers the pin would pass through?

    • A) parietal pericardium, fibrous pericardium, visceral pericardium, myocardium, endothelium, endocardium

    • B) fibrous pericardium, visceral pericardium, parietal pericardium, endocardium, myocardium, endothelium

    • C) parietal pericardium, endocardium, fibrous pericardium, myocardium, visceral pericardium, endothelium

    • D) fibrous pericardium, parietal pericardium, visceral pericardium, myocardium, endocardium, endothelium

    • E) visceral pericardium, fibrous pericardium, parietal pericardium, endothelium, myocardium, endocardium

    Correct Answer
    A. D) fibrous pericardium, parietal pericardium, visceral pericardium, myocardium, endocardium, endothelium
  • 42. 

    Which channels account for the "plateau" characteristic of fast cardiac ventricular fibers?

    • A) voltage-gated K+ channels

    • B) voltage-gated Na+ channels

    • C) voltage-gated funny (F-type) Na+ channels

    • D) voltage-gated slow (L-type) CA+2 channels

    • E) voltage-gated transient (T-type) Ca+2 channels

    Correct Answer
    A. D) voltage-gated slow (L-type) CA+2 channels
  • 43. 

    Which channels account for action potential depolarization in slow, autorhythmic cardiac cells?

    • A) Na channels

    • B) slow, L-type Ca channels

    • C) fast T-tyle Ca channels

    • D) F-type Na channels

    • E) potassium channels

    Correct Answer
    A. B) slow, L-type Ca channels
  • 44. 

    Which statement characterizes a portal system of blood vessels?

    • A) the absence of a capillary bed, thus shunting arterial blood directly to venules

    • B) a capillary bed supplied and drained by a larger, no capillary vessel

    • C) two capillary beds connected by a larger blood vessel

    • D) a continuous capillary bed that extends from one organ to another

    • E) none of the above

    Correct Answer
    A. C) two capillary beds connected by a larger blood vessel
  • 45. 

    Pressure in the left ventricle during ventricular diastole would be:

    • A) 120 mmHg

    • B) near zero

    • C) 80 mmHg

    • D) 100 mmHg

    • E) none of the above

    Correct Answer
    A. B) near zero
  • 46. 

    Which factor does not contribute to intrinsic (local) control of blood flow?

    • A) ANG-II

    • B) myogenic effects

    • C) decreased O2 or increased CO2

    • D) nitric oxide

    • E) none of the above

    Correct Answer
    A. A) ANG-II
  • 47. 

    Ventricular filling primarily occurs during which phase:

    • A) atrial & ventricular diastole

    • B) atrial & ventricular systole

    • C) ventricular systole

    • D) atrial systole

    • E) none of the above

    Correct Answer
    A. A) atrial & ventricular diastole
  • 48. 

    What happens during the ECG "S-T" segment?

    • A) atrial depolarization

    • B) atrial systole

    • C) ventricular depolarization

    • D) ventricular systole

    • E) ventricular repolarization

    Correct Answer
    A. D) ventricular systole
  • 49. 

    The most important factor in determining blood flow to a given tissue or organ is:

    • A) arterial pressure

    • B) vascular resistance

    • C) venous pressure

    • D) all of the above

    • E) none of the above

    Correct Answer
    A. B) vascular resistance

Quiz Review Timeline (Updated): Mar 21, 2022 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 21, 2022
    Quiz Edited by
    ProProfs Editorial Team
  • Dec 07, 2013
    Quiz Created by
    Ech2w

Popular Topics

+ Show more
Back to Top Back to top
Advertisement
×

Wait!
Here's an interesting quiz for you.

We have other quizzes matching your interest.