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Free Practice Quiz Question List

1 Circulatory System Overview Online Quiz Questions

Use this free practice quiz with 20 questions to review 1 Circulatory System Overview, test your knowledge, and prepare for your next test or exam.

20 questions
01
True or false
1 point

True or false: Platelets primarily defend the body against infection.

  1. A

    True

  2. B

    False

02
Choose one
1 point

A tissue needs to receive oxygen and nutrients from the blood and release wastes into it. Which vessels are the main site of this exchange?

  1. A

    Arteries

  2. B

    Capillaries

  3. C

    Venules

  4. D

    Veins

03
Fill in the blank
1 point

The liquid portion of blood, which carries substances such as nutrients and dissolved wastes, is called .

04
Choose one
1 point

Blood returning from the body enters the heart through the vena cava. Which chamber receives it first?

  1. A

    Right ventricle

  2. B

    Left atrium

  3. C

    Right atrium

  4. D

    Left ventricle

05
True or false
1 point

True or false: Pulmonary arteries carry oxygen-poor blood from the heart to the lungs.

  1. A

    True

  2. B

    False

06
Written response
1 point

What vessels carry oxygen-rich blood from the lungs to the left atrium?

07
Fill in the blank
1 point

The small arteries that direct blood into capillary networks are called .

08
Choose all
1 point

Which functions are supported by the circulatory system? Select all that apply.

  1. A

    Deliver oxygen and nutrients to cells

  2. B

    Produce hormones in the heart

  3. C

    Carry carbon dioxide and other wastes away for removal

  4. D

    Digest nutrients before they enter tissues

  5. E

    Transport immune cells and support blood clotting

  6. F

    Help regulate body temperature and maintain internal balance

09
Choose one
1 point

Oxygen-rich blood is ready to leave the heart through the aorta and travel to the body. Which chamber pumps it into the aorta?

  1. A

    Right atrium

  2. B

    Right ventricle

  3. C

    Left atrium

  4. D

    Left ventricle

10
Choose all
1 point

Which statements about blood vessels are accurate? Select all that apply.

  1. A

    Arteries generally have thick, elastic walls that withstand higher pressure.

  2. B

    Venules carry blood away from the heart and into arterioles.

  3. C

    Arterioles direct blood into capillary networks.

  4. D

    Venules collect blood leaving capillaries.

  5. E

    Capillaries have thick walls that prevent exchange with tissues.

11
Written response
1 point

What are the upper chambers of the heart, which receive blood, called?

12
Choose one
1 point

Which route describes pulmonary circulation?

  1. A

    Left side of the heart → body tissues → right side of the heart

  2. B

    Right side of the heart → lungs → left side of the heart

  3. C

    Lungs → right side of the heart → body tissues

  4. D

    Right side of the heart → body tissues → left side of the heart

13
Choose one
1 point

A vein in a limb contains valves. What is the main function of these valves?

  1. A

    Increase the oxygen content of blood

  2. B

    Exchange nutrients directly with tissues

  3. C

    Help prevent backward blood flow

  4. D

    Pump blood away from the heart

14
Open ended
1 point

Explain how the heart, blood vessels, and blood work together to deliver oxygen to a working muscle and carry carbon dioxide away. Trace the route of the oxygen-rich blood from the lungs to the muscle.

15
Choose one
1 point

Why are artery walls generally thick and elastic?

  1. A

    They help withstand higher blood pressure.

  2. B

    They allow blood to flow backward more easily.

  3. C

    They prevent all exchange between blood and tissues.

  4. D

    They store the formed elements of blood.

16
True or false
1 point

The atria receive blood into the heart, while the ventricles pump blood out of it.

  1. A

    True

  2. B

    False

17
Choose one
1 point

A circulating blood component helps defend the body against infection. Which component performs this role?

  1. A

    Red blood cells

  2. B

    White blood cells

  3. C

    Platelets

  4. D

    Plasma

18
Written response
1 point

What type of small blood vessel collects blood leaving capillaries before it enters veins?

19
Choose one
1 point

Which blood component is the liquid portion that carries hormones and dissolved wastes?

  1. A

    Plasma

  2. B

    Red blood cells

  3. C

    White blood cells

  4. D

    Platelets

20
Written response
1 point

After oxygen-rich blood enters the left atrium from the lungs, which chamber pumps it into the aorta?