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 (B)</p> Signup and view all the answers

What is the primary driver of diastolic blood pressure?

<p>Ventricular relaxation (A)</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. (A)</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. (B)</p> Signup and view all the answers

What is the normal level of arterial blood pressure?

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

What is the formula for pulse pressure?

<p>Diastolic BP - Systolic BP (D)</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 (C)</p> Signup and view all the answers

What is the function of the diastolic blood pressure?

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

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

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

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

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

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

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

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

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

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

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

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

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

How does vessel length affect blood pressure?

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

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

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

How does compliance of the aorta influence blood pressure?

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

What physiological effect does cold weather have on blood pressure?

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

During which phase of respiration does arterial blood pressure increase?

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

What happens to arterial blood pressure in supine position?

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

How does gravity affect mean arterial pressure when standing?

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

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

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

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

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