A&p II Exam 2 Part 1

15 Questions  I  By Adchcrash
Please take the quiz to rate it.

AP Quizzes & Trivia
A&P II Exam 2 Part 1

  
or Create Online Test
Changes are done, please start the quiz.


Questions and Answers

Removing question excerpt is a premium feature

Upgrade and get a lot more done!
  • 1. 
    The portion of the intrinsic cardiac conduction system located in the interatrial septum is the:
    • A. 

      AV node

    • B. 

      SA node

    • C. 

      Tricuspid node

    • D. 

      Purkinje fibers

    • E. 

      No correct answer


  • 2. 
    Which is/are true about extrinsic stimulation of the heart?
    • A. 

      Sympathetic stimulation increase force of contraction

    • B. 

      Vagus nerve stimulation increases heart rate

    • C. 

      Sympathetic stimulation decreases heart rate

    • D. 

      Exercise increases ventricular filling time

    • E. 

      All are correct


  • 3. 
    Freshly oxygenated blood is first received by the:
    • A. 

      Vena cava

    • B. 

      Right atrium

    • C. 

      Pulmonary artery

    • D. 

      Left ventricle

    • E. 

      Right ventricle


  • 4. 
    Baroreceptors located in the carotid sinus and aortic arch:
    • A. 

      Sense changes in O2 and CO2 blood levels

    • B. 

      Sense changes in Ca+ blood levels

    • C. 

      Sense changes in venous pressure

    • D. 

      Sense changes in arterial pressure

    • E. 

      Sense chemical and mechanical changes


  • 5. 
    Which statement does not accurately describe veins?
    • A. 

      Veins have less elastic tissue and less smooth muscle than arteries

    • B. 

      Veins contain more fibrous tissue than arteries

    • C. 

      Most veins in the extremities have valves

    • D. 

      All veins carry deoxygenated blood

    • E. 

      Veins can contain up to 65% of the body's blood volume


  • 6. 
    Which of the following tissue is responsible for vasoconstriction of blood vessels?
    • A. 

      Elastic tissue

    • B. 

      Smooth muscle

    • C. 

      Tunicca externa

    • D. 

      Collagen tissue

    • E. 

      Adipose tissue


  • 7. 
    Peripheral tissue and vascular resistance:
    • A. 

      Is inversely related to the diameter of the arterioles

    • B. 

      Tends to increase if blood viscosity increases

    • C. 

      Is directly proportional to the length of the vascular bed

    • D. 

      Increases with sympathetic stimulation due to vasoconstriction

    • E. 

      All are correct


  • 8. 
    Which of the following could lead to decreased venous return of blood to the heart?
    • A. 

      Increased muscular activity

    • B. 

      An increase in blood volume

    • C. 

      An increase in venous pressure

    • D. 

      Damage to the venous valve

    • E. 

      Sympathetic stimulation


  • 9. 
    Arterial blood pressure increases in response to:
    • A. 

      Catecholamine release from the adrenal medulla

    • B. 

      Increase in stroke volume

    • C. 

      Increase in heart rate

    • D. 

      Atheriolsclerosis

    • E. 

      All are correct


  • 10. 
    The structure of a capillary wall differs from that of a vein or an artery because:
    • A. 

      It has a single tunic, only the tunica interna

    • B. 

      It has two tunics instead of three

    • C. 

      It is less fragile than artery or vein walls

    • D. 

      The diameter is larger than arteries and veins

    • E. 

      All are correct


  • 11. 
    The chemoreceptors in the carotid and aortic bodies are sensitive to:
    • A. 

      Change in arterial pressure

    • B. 

      Change in CO2, pH and O2 blood levels

    • C. 

      Decrease in venous blood pressure

    • D. 

      Changes in arterial elasticity

    • E. 

      All are correct


  • 12. 
    The myocardium receives its blood supply directly from:
    • A. 

      Pulmonary arteries

    • B. 

      Coronary arteries

    • C. 

      Aorta

    • D. 

      Coronary sinus

    • E. 

      Carotid arteries


  • 13. 
    Blood flow in the capillaries is slow and intermittent because of:
    • A. 

      Venous valves which plugs up the capillaries

    • B. 

      Large diameter of each individual capillary

    • C. 

      Large cross-sectional area of the total capillary bed

    • D. 

      Thin walls of veins

    • E. 

      Very high blood pressure in capillaries compared to arteries


  • 14. 
    Which occurs when a depolarization wave travels through the myocardium?
    • A. 

      Decreased Na+ influx, increased Ca+ influx, increased K+ influx

    • B. 

      Decreased Na+ influx, increased Ca+ influx, increased K+ efflux

    • C. 

      Increased Na+ influx, decreased Ca+ influx, increased K+ influx

    • D. 

      Increased Na+ influx, increased Ca+ influx, increased K+ influx

    • E. 

      Increased Na+ influx, increased Ca+ influx, increased K+ efflux


  • 15. 
    Which of the following statements about the left side of the heart is false?
    • A. 

      Deoxygenated blood returns to the left atrium

    • B. 

      Left ventricle pumps oxygenated blood

    • C. 

      Bicuspid valve or mitral valve is between the left atrium and left ventricle

    • D. 

      Left ventricle pumps blood into the systemic circulation

    • E. 

      Left-sided heart failure results in fluid build-up in the lungs causing pulmonary edema


Back to top

Removing ad is a premium feature

Upgrade and get a lot more done!
Take Another Quiz
We have sent an email with your new password.