Chapter 15 Circulation
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Questions and Answers

Which blood vessels are more distensible, arteries or veins?

  • Arteries
  • Veins (correct)
  • Neither arteries nor veins
  • Both arteries and veins

    • What is the relationship between distensibility and compliance?

  • Distensibility and compliance are the same thing
  • Compliance is a component of distensibility
  • Distensibility is a component of compliance (correct)
  • There is no relationship

    • What is the formula for compliance (C)?

  • C = increase in volume x increase in pressure
  • C = increase in pressure / increase in volume
  • C = increase in volume / increase in pressure (correct)
  • C = increase in pressure x increase in volume

    • Which vessels have stronger walls, arteries or veins?

    <p>Arteries</p> Signup and view all the answers

    What is the relationship between volume and compliance?

    <p>Volume is a component of compliance</p> Signup and view all the answers

    What is the relationship between sympathetic stimulation and arterial compliance?

    <p>Sympathetic stimulation decreases arterial compliance</p> Signup and view all the answers

    What is the relationship between sympathetic inhibition and venous compliance?

    <p>Sympathetic inhibition increases venous compliance</p> Signup and view all the answers

    Which blood vessels have high compliance?

    <p>Veins</p> Signup and view all the answers

    What is the most important factor in determining the quantity of blood that can be stored in a vessel?

    <p>Volume</p> Signup and view all the answers

    Do arteries have any compliance?

    <p>Yes</p> Signup and view all the answers

    Which of the following is true about blood pressure?

    <p>Blood pressure increases with age</p> Signup and view all the answers

    What is the formula for calculating mean arterial pressure (MAP)?

    <p>MAP = DBP + 1/3 (SBP-DBP)</p> Signup and view all the answers

    What is the role of veins in the circulation?

    <p>Pathway for blood to return to the heart</p> Signup and view all the answers

    What happens to venous pressure when the veins are distended?

    <p>Venous pressure increases</p> Signup and view all the answers

    What is the normal value for right atrial pressure (RAP)?

    <p>RAP = 0 mm Hg</p> Signup and view all the answers

    What is the main function of the venous pump?

    <p>To compress veins and propel blood to the heart</p> Signup and view all the answers

    What happens when venous valves fail?

    <p>Venous pressure increases</p> Signup and view all the answers

    Which vessels have high compliance?

    <p>Veins</p> Signup and view all the answers

    Where is most of the blood volume located?

    <p>Venous system</p> Signup and view all the answers

    What is the site of most vascular resistance?

    <p>Arterial system</p> Signup and view all the answers

    Which term refers to the ability of a vessel to stretch and hold volume?

    <p>Compliance</p> Signup and view all the answers

    What is the mechanism used to maintain blood pressure constant during changes in blood volume?

    <p>Vascular Compliance</p> Signup and view all the answers

    What is the difference between systolic and diastolic pressure called?

    <p>Pulse Pressure</p> Signup and view all the answers

    What influences the shape of the aorta pressure trace?

    <p>Arterial Distensibility</p> Signup and view all the answers

    What is the ratio that determines pulse pressure?

    <p>Stroke Volume (SV) to Compliance (C)</p> Signup and view all the answers

    What is the term for the progressive diminution of pulsations?

    <p>Dampening</p> Signup and view all the answers

    What method is used to indirectly measure blood pressure using a cuff and stethoscope?

    <p>Auscultatory or 'cuff' method</p> Signup and view all the answers

    What method is the most precise for measuring blood pressure?

    <p>Cannula needle method</p> Signup and view all the answers

    What is the average blood pressure over time called?

    <p>Mean Arterial Pressure (MAP)</p> Signup and view all the answers

    What is the formula for calculating mean arterial pressure (MAP)?

    <p>MAP = DBP + \frac{1}{3}(SBP-DBP)</p> Signup and view all the answers

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