Q: Which of the following equations correctly represents cardiac output?

$$\text{Cardiac Output} = \text{Stroke Volume} \times \text{Heart Rate}$$

Question 1

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

Accepted Answer

Tunica media

Question 2

A patient presents with fluid accumulation in the lungs, leading to difficulty breathing and suffocation. What is the most likely diagnosis?

Accepted Answer

Pulmonary edema

Question 3

Which of the following best describes the function of capillaries in the cardiovascular system?

Accepted Answer

Connect arterioles and venules, allowing exchange of nutrients and gases

Question 4

If the total blood volume in an average adult is approximately 5 liters and this represents 8% of body weight, what is the approximate body weight in kilograms?

Accepted Answer

$$\frac{5}{0.08} = 62.5 kg$$

Question 5

Which of the following factors will increase vascular resistance and therefore increase blood pressure?

Accepted Answer

Increased blood viscosity

Question 6

What is the primary function of valves in veins?

Accepted Answer

Aid in blood returning to the heart by preventing backflow

Question 7

Which of the following equations correctly represents cardiac output?

Accepted Answer

$$	ext{Cardiac Output} = 	ext{Stroke Volume} 	imes 	ext{Heart Rate}$$

Question 8

A patient with a weak right ventricle is most likely to develop which condition?

Accepted Answer

Peripheral edema

Question 9

Which of the following statements about arteries is correct?

Accepted Answer

They carry blood away from the heart

Question 10

If a tissue has a high rate of metabolism, what can be inferred about its capillary network?

Accepted Answer

It will have a denser capillary network

Question 11

Which vessel wall layer contains connective tissue and is involved in autonomic nervous system innervation?

Accepted Answer

Tunica externa

Question 12

Which of the following best describes systolic pressure?

Accepted Answer

Pressure in the arteries during ventricular contraction

Question 13

A patient is diagnosed with hypertension. Which of the following is most likely to be observed?

Accepted Answer

High systolic and/or diastolic pressures

Question 14

Which of the following is a direct result of increased capillary blood pressure at the arterial end?

Accepted Answer

Increased filtration of fluid out of the capillary

Question 15

Which of the following would most likely cause peripheral edema?

Accepted Answer

Weak right ventricle

Question 16

Which of the following is true regarding veins compared to arteries?

Accepted Answer

Veins have valves to prevent backflow

Question 17

If stroke volume is 70 mL and heart rate is 75 beats per minute, what is the cardiac output?

Accepted Answer

$$70 	imes 75 = 5250 mL/$$min

Question 18

Which of the following is a consequence of pulmonary edema?

Accepted Answer

Suffocation

Question 19

Which vessel type is most important for nutrient and gas exchange?

Accepted Answer

Capillaries

Question 20

Which of the following would decrease blood pressure?

Accepted Answer

Decreased vascular resistance

Cardiovascular System: Blood Vessels and Circulation Study Notes

Study Guide - Practice Questions

Study Guide - Flashcards