Question 1

Which of the following best describes the primary function of capillaries in the circulatory system?

Accepted Answer

To allow exchange of substances between blood and tissues

Question 2

A patient presents with a blood pressure reading of 150/95 mm Hg. According to the study materials, how would this condition be classified?

Accepted Answer

Hypertension

Question 3

Which vessel type has the thickest wall and why is this structural feature important?

Accepted Answer

Arteries, to accommodate high pressure from ventricular contraction

Question 4

Which of the following equations correctly represents blood pressure?

Accepted Answer

$$BP = CO 	imes PR$$

Question 5

During the measurement of arterial blood pressure, the first sound heard (Korotkoff sound) corresponds to which value?

Accepted Answer

Systolic pressure

Question 6

Which vessel is responsible for carrying nutrient-rich blood from the digestive organs to the liver for processing?

Accepted Answer

Hepatic portal vein

Question 7

If the radius of a blood vessel doubles, how does this affect blood flow, assuming all other factors remain constant? (Use Poiseuille’s Law: $$Q = \frac{\pi \Delta P r^4$}{8 \eta l})$$

Accepted Answer

Blood flow increases by a factor of 16

Question 8

Which of the following is NOT a function of the hepatic portal system?

Accepted Answer

Delivers oxygen-rich blood to the liver

Question 9

A patient has a systolic pressure of 120 mm Hg and a diastolic pressure of 80 mm Hg. What is the pulse pressure?

Accepted Answer

$$40 mm Hg$$

Question 10

Which of the following factors has the greatest impact on peripheral resistance and thus blood flow?

Accepted Answer

Vessel diameter

Question 11

Which of the following statements about veins is correct?

Accepted Answer

They contain valves to prevent backflow of blood

Question 12

A patient is diagnosed with hypotension. Which of the following blood pressure readings would support this diagnosis?

Accepted Answer

105/70 mm Hg

Question 13

Which layer of the artery wall is primarily responsible for vasoconstriction and vasodilation?

Accepted Answer

Tunica media

Question 14

Which of the following best explains why pressure in blood vessels decreases as distance from the heart increases?

Accepted Answer

Peripheral resistance accumulates

Question 15

Which of the following is a correct sequence of blood flow through the hepatic portal system?

Accepted Answer

Gastric vein → hepatic portal vein → liver → hepatic vein → inferior vena cava

Question 16

Which of the following is the best location to palpate the pulse in the lower limb?

Accepted Answer

Femoral artery

Question 17

Which of the following best describes the difference between efferent and afferent blood vessels?

Accepted Answer

Efferent vessels carry blood away from the heart; afferent vessels carry blood toward the heart

Question 18

Which of the following is a direct effect of chronic hypertension on the cardiovascular system?

Accepted Answer

Increased risk of vessel rupture and organ damage

Question 19

Which of the following best describes the function of the tunica externa in blood vessels?

Accepted Answer

Protects and reinforces the vessel, anchoring it to surrounding structures

Question 20

A patient has a blood flow rate of $$Q = 100 mL/$$min, a pressure difference $$\Delta P = 50 mm Hg$$, blood viscosity $$\eta = 0.04$$ Poise, and vessel length $$l = 20 cm. $$Using Poiseuille’s Law, what is the approximate vessel radius required? (Use $$Q = \frac{\pi \Delta P r^4$}{8 \eta l}$$ and solve for $$r.)$$

Accepted Answer

$$r \approx 0.4 cm$$

Blood Vessels and Cardiovascular Dynamics: ANP Study Guide

Study Guide - Practice Questions

Study Guide - Flashcards