L20 Arterial Blood Pressure
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Questions and Answers

What is the primary difference between arterial and venous blood pressure?

  • Arterial and venous blood pressure cannot be compared.
  • Arterial blood pressure is higher than venous pressure. (correct)
  • Arterial and venous blood pressure are the same.
  • Venous blood pressure is higher than arterial pressure.

    • What is the typical range of pulmonary blood pressure compared to systemic circulation?

  • Pulmonary blood pressure is much lower than systemic circulation. (correct)
  • Pulmonary and systemic blood pressure cannot be compared.
  • Pulmonary blood pressure is much higher than systemic circulation.
  • Pulmonary blood pressure is the same as systemic circulation.

    • What is the primary driver of systolic blood pressure?

  • Peripheral resistance
  • Ventricular contraction (correct)
  • Aortic compliance
  • Ventricular relaxation

    • Which of the following factors does NOT contribute to blood pressure?

    <p>Blood pH</p> Signup and view all the answers

    What is the primary driver of diastolic blood pressure?

    <p>Ventricular relaxation</p> Signup and view all the answers

    How do cardiac output, systemic vascular resistance, and blood volume interact to regulate blood pressure?

    <p>Cardiac output, systemic vascular resistance, and blood volume all interact to regulate blood pressure.</p> Signup and view all the answers

    What is the relationship between blood pressure and blood flow?

    <p>Blood flows from an area of high to an area of low blood pressure.</p> Signup and view all the answers

    What is the normal level of arterial blood pressure?

    <p>120/80 mmHg</p> Signup and view all the answers

    What is the formula for pulse pressure?

    <p>Diastolic BP - Systolic BP</p> Signup and view all the answers

    Which of the following is true about mean arterial pressure (MAP)?

    <p>MAP = Diastolic + 1/3 pulse pressure</p> Signup and view all the answers

    What is the function of the diastolic blood pressure?

    <p>Prevent blood stasis in the arteries</p> Signup and view all the answers

    How does arterial blood pressure vary with age according to the text?

    <p>Increases with age</p> Signup and view all the answers

    In what individuals is arterial blood pressure typically higher according to the text?

    <p>Obese individuals</p> Signup and view all the answers

    When does diurnal variation of arterial blood pressure result in the lowest readings?

    <p>During sleep</p> Signup and view all the answers

    What is the primary factor affecting the radius of a blood vessel?

    <p>Elasticity of the aorta</p> Signup and view all the answers

    How does vasoconstriction of an arteriole affect total peripheral resistance (TPR)?

    <p>Increases TPR</p> Signup and view all the answers

    What impact does an increase in blood viscosity have on blood pressure?

    <p>Increases blood pressure</p> Signup and view all the answers

    How does vessel length affect blood pressure?

    <p>Increases blood pressure</p> Signup and view all the answers

    What effect does vasoconstriction have on total peripheral resistance (TPR)?

    <p>Increases TPR</p> Signup and view all the answers

    How does compliance of the aorta influence blood pressure?

    <p>Decreases blood pressure</p> Signup and view all the answers

    What physiological effect does cold weather have on blood pressure?

    <p>Increases blood pressure</p> Signup and view all the answers

    During which phase of respiration does arterial blood pressure increase?

    <p>Late Inspiration</p> Signup and view all the answers

    What happens to arterial blood pressure in supine position?

    <p>No change</p> Signup and view all the answers

    How does gravity affect mean arterial pressure when standing?

    <p>Increases below the reference point, decreases above</p> Signup and view all the answers

    According to Poiseuille's law, what determines Total Peripheral Resistance (TPR)?

    <p>$r^4$</p> Signup and view all the answers

    What factor plays a significant role in maintaining diastolic blood pressure?

    <p>Total Peripheral Resistance</p> Signup and view all the answers

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