Q: A patient presents with a blood pressure of 150/95 mmHg. Calculate their pulse pressure and determine if it is within the normal range.

Pulse pressure is $$55\ \text{mmHg}$$, which is abnormally high.

Q: Which of the following equations correctly represents the calculation for mean arterial pressure (MAP)?

$$\text{MAP} = \text{Diastolic Pressure} + \frac{\text{Pulse Pressure}}{3}$$

Question 1

Which of the following best describes the function of arteries in the circulatory system?

Accepted Answer

They carry blood away from the heart.

Question 2

Which layer of the blood vessel wall is primarily responsible for vasoconstriction and vasodilation, and is regulated by the sympathetic nervous system?

Accepted Answer

Tunica media

Question 3

A patient presents with a blood pressure of 150/95 mmHg. Calculate their pulse pressure and determine if it is within the normal range.

Accepted Answer

Pulse pressure is $$55\ 	ext{mmHg}$$, which is abnormally high.

Question 4

Which of the following capillary types is the least permeable and forms the blood-brain barrier?

Accepted Answer

Continuous capillaries

Question 5

Which of the following equations correctly represents the calculation for mean arterial pressure (MAP)?

Accepted Answer

$$	ext{MAP} = 	ext{Diastolic Pressure} + \frac{	ext{Pulse Pressure}}{3}$$

Question 6

A patient with severe dehydration is likely to experience which change in peripheral resistance and why?

Accepted Answer

Increased resistance due to higher blood viscosity

Question 7

Which of the following is the most susceptible vessel to atherosclerosis?

Accepted Answer

Aorta

Question 8

During exercise, which of the following tissues will experience increased blood flow due to local vasodilation?

Accepted Answer

Skin

Question 9

Which of the following statements about veins is correct?

Accepted Answer

Veins act as blood reservoirs and contain up to 65% of the blood supply.

Question 10

A patient is diagnosed with vascular shock. Which of the following best describes the underlying cause?

Accepted Answer

Loss of vasomotor tone causing extreme vasodilation and decreased peripheral resistance

Question 11

Which hormone is released in response to increased blood pressure and acts to decrease blood volume and pressure by promoting sodium excretion?

Accepted Answer

Atrial natriuretic peptide (ANP)

Question 12

Which of the following best explains why capillary blood flow is slowest compared to arteries and veins?

Accepted Answer

Capillaries have the largest total cross-sectional area.

Question 13

If the net filtration pressure (NFP) at the venous end of a capillary is negative, what is the physiological outcome?

Accepted Answer

Fluid is reabsorbed into the capillary from the interstitial space.

Question 14

Which of the following is a correct real-life application of the bulk flow principle in capillaries?

Accepted Answer

Kwashiorkor leads to edema because decreased plasma proteins reduce capillary osmotic pressure.

Question 15

Which of the following best describes the hepatic portal system?

Accepted Answer

It collects blood from the GI tract and routes it to the liver for processing.

Question 16

A patient with chronic hypertension is at increased risk for which of the following complications due to increased afterload?

Accepted Answer

Heart failure

Question 17

Which of the following best explains why arterioles are called resistance vessels?

Accepted Answer

They regulate blood flow into capillary beds by changing diameter.

Question 18

Which of the following is the correct sequence of layers in a typical blood vessel wall from superficial to deep?

Accepted Answer

Tunica externa, tunica media, tunica intima

Question 19

Which of the following is a direct effect of angiotensin II on blood pressure regulation?

Accepted Answer

Vasoconstriction of arterioles

Question 20

A patient is experiencing orthostatic hypotension. Which of the following best describes this condition?

Accepted Answer

A temporary drop in blood pressure upon standing up

Chapter 19: Blood Vessels – Structure, Function, and Circulation

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