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4 The Cardiovascular System Online Quiz Questions

Use this free practice quiz with 20 questions to review 4 The Cardiovascular System, test your knowledge, and prepare for your next test or exam.

20 questions
01
True or false
1 point

True or false: Arteries are defined by carrying blood away from the heart, not by the blood's oxygen content.

  1. A

    True

  2. B

    False

02
Choose one
1 point

Which type of blood vessel is the main site of exchange of gases, nutrients, water, and wastes between blood and surrounding tissues?

  1. A

    Arteries

  2. B

    Capillaries

  3. C

    Arterioles

  4. D

    Veins

03
Choose all
1 point

Select all statements that correctly match a formed element of blood with one of its roles.

  1. A

    Red blood cells carry most of the blood's oxygen and some carbon dioxide.

  2. B

    White blood cells help defend the body against pathogens and other threats.

  3. C

    Platelets help form clots and limit blood loss.

  4. D

    Plasma is a formed element that directly forms clots.

04
Fill in the blank
1 point

The wall that separates the right and left sides of the heart is called the .

05
Choose one
1 point

What is the primary role of the septum in the heart?

  1. A

    It separates the atria from the ventricles.

  2. B

    It prevents blood from flowing backward through the heart.

  3. C

    It separates the right and left sides of the heart.

  4. D

    It connects the heart to the lungs.

06
True or false
1 point

True or false: During diastole, the heart muscle relaxes and the chambers fill.

  1. A

    True

  2. B

    False

07
Fill in the blank
1 point

Blood leaving the left ventricle enters the aorta through the .

08
Choose one
1 point

Which statement correctly describes the destinations of blood pumped by the heart's two ventricles?

  1. A

    The right ventricle pumps blood to the body, and the left ventricle pumps blood to the lungs.

  2. B

    The right ventricle pumps blood to the lungs, and the left ventricle pumps blood to the body.

  3. C

    Both ventricles pump blood to the lungs before it reaches the body.

  4. D

    Both ventricles pump blood directly to the body.

09
Written response
1 point

At which node does the heart's electrical signal briefly pause after spreading across the atria?

10
Choose one
1 point

Which vessel type adjusts its diameter to help control resistance and direct blood into tissues?

  1. A

    Venules

  2. B

    Capillaries

  3. C

    Arterioles

  4. D

    Veins

11
Choose all
1 point

Select all statements about cardiovascular regulation that are supported.

  1. A

    When pressure falls, many arterioles can constrict as part of the autonomic response.

  2. B

    Active tissues cause nearby arterioles to constrict so less blood reaches them.

  3. C

    Active tissues can cause nearby arterioles to dilate, increasing blood delivery.

  4. D

    Kidneys help regulate blood volume by changing water and salt balance.

12
Written response
1 point

A person's heart rate is 8080 beats per minute and stroke volume is 6565 mL per beat. Calculate cardiac output in L/min. Enter the exact value; no rounding is needed.

13
Open ended
1 point

Trace the route of one red blood cell returning from the body, through the heart and lungs, and back into systemic circulation. Include the heart chambers, valves, major vessels, and the gas exchange that occurs in the lungs.

14
Choose one
1 point

A small blood vessel is injured. Which blood component directly helps limit blood loss by contributing to clot formation?

  1. A

    Red blood cells

  2. B

    White blood cells

  3. C

    Platelets

  4. D

    Plasma

15
True or false
1 point

During diastole, the heart muscle relaxes and the chambers fill.

  1. A

    True

  2. B

    False

16
Written response
1 point

Which type of blood vessel has thin walls where gases, nutrients, water, and wastes are exchanged between blood and surrounding tissues?

17
Choose one
1 point

Which statement correctly applies the meaning of artery and vein to blood flow between the heart and lungs?

  1. A

    The pulmonary arteries carry oxygen-rich blood away from the lungs.

  2. B

    The pulmonary arteries carry oxygen-poor blood away from the heart toward the lungs.

  3. C

    The pulmonary veins carry oxygen-poor blood from the heart toward the lungs.

  4. D

    The pulmonary veins carry blood away from the heart toward the body.

18
Choose one
1 point

Which sequence correctly describes the normal spread of the heart's electrical signal from its starting point to coordinated ventricular contraction?

  1. A

    AV node → SA node → Purkinje fibers → atria → bundle branches

  2. B

    SA node → AV node → atria → bundle branches → atrioventricular bundle → Purkinje fibers

  3. C

    SA node → atria → AV node → atrioventricular bundle → bundle branches → Purkinje fibers

  4. D

    Purkinje fibers → atria → SA node → AV node → atrioventricular bundle

19
Choose one
1 point

A chamber must pump blood throughout the body, where higher pressure is needed. Which chamber and structural feature best meet that need?

  1. A

    The left ventricle has a thicker muscular wall to generate higher pressure.

  2. B

    The right ventricle has a thicker muscular wall because it pumps blood throughout the body.

  3. C

    The left atrium has a thicker muscular wall because it pumps blood to the lungs.

  4. D

    The right atrium has a thicker muscular wall because it generates systemic pressure.

20
Written response
1 point

A heart beats at 8080 beats per minute and ejects 6565 mL per beat. Using cardiac output=heart rate×stroke volume\text{cardiac output} = \text{heart rate} \times \text{stroke volume}, calculate the cardiac output in L/min. Enter the numerical value only; the fixed unit is L/min.