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08 Blood and the Cardiovascular System Online Quiz Questions

Use this free practice quiz with 20 questions to review 08 Blood and the Cardiovascular System, test your knowledge, and prepare for your next test or exam.

20 questions
01
Written response
1 point

What iron-containing protein in red blood cells binds oxygen?

02
Fill in the blank
1 point

At a damaged blood vessel, platelets work with plasma clotting proteins to form a .

03
Choose one
1 point

Which description best identifies plasma?

  1. A

    A collection of cell fragments that seals damaged vessels

  2. B

    The mostly water liquid that carries dissolved substances

  3. C

    A protein that binds oxygen inside red blood cells

  4. D

    A type of white blood cell that leaves vessels to enter tissues

04
True or false
1 point

True or false: The lymphatic system collects excess fluid in tissues and eventually returns it to the blood.

  1. A

    True

  2. B

    False

05
Choose one
1 point

Why does the left ventricle have a thicker muscular wall than the other heart chambers?

  1. A

    It receives blood from the body and needs to stretch farther than other chambers.

  2. B

    It pumps blood only through the lungs, where pressure must be especially high.

  3. C

    It pumps blood through the systemic circuit to the rest of the body.

  4. D

    It keeps blood from flowing backward into the atria.

06
True or false
1 point

True or false: A blood vessel's classification as an artery or vein is based on its direction of flow relative to the heart, not on its oxygen content.

  1. A

    True

  2. B

    False

07
Written response
1 point

What is the name of the circuit that carries blood from the right ventricle to the lungs and returns it to the left atrium?

08
Fill in the blank
1 point

Much of the carbon dioxide produced by cells is converted in red blood cells to and carried in plasma.

09
Choose all
1 point

Select all statements that correctly describe how blood helps endocrine glands communicate with target cells.

  1. A

    Endocrine glands release hormones that enter the bloodstream.

  2. B

    Hormones travel only to target cells beside the gland that produced them.

  3. C

    Blood can carry hormones to target cells far from their source.

  4. D

    Blood provides a transport route between hormone-producing glands and target cells.

10
Choose one
1 point

Which statement correctly describes the systemic circuit?

  1. A

    The pulmonary circuit carries blood from the left ventricle to the lungs, then back to the right atrium.

  2. B

    The systemic circuit carries blood from the left ventricle to the body and returns it to the right atrium.

  3. C

    The systemic circuit carries blood from the right ventricle to the lungs and returns it to the left atrium.

  4. D

    The pulmonary circuit carries blood from the left atrium to the aorta and returns it to the right ventricle.

11
Choose all
1 point

Select all statements that correctly describe how blood transports materials to or from organs and body cells.

  1. A

    Blood carries urea to the kidneys for removal.

  2. B

    Blood carries carbon dioxide to the lungs, where it can be exhaled.

  3. C

    Blood carries urea to the lungs so it can be exhaled.

  4. D

    Blood delivers nutrients such as glucose and amino acids to cells.

12
Open ended
1 point

Explain how capillaries allow oxygen and carbon dioxide to exchange between the blood and nearby body tissues.

13
Choose one
1 point

How does the flexible, biconcave shape of red blood cells help them function in circulation?

  1. A

    It allows the cells to leave blood vessels and attack abnormal cells.

  2. B

    It helps the cells pass through narrow capillaries.

  3. C

    It enables the cells to form clots with plasma proteins.

  4. D

    It allows the cells to filter wastes from the blood.

14
True or false
1 point

True or false: Veins carry blood toward the heart, whether that blood is relatively rich or poor in oxygen.

  1. A

    True

  2. B

    False

15
Choose one
1 point

A blood component needs to carry oxygen and pass through very narrow capillaries. Which component is specialized for both roles?

  1. A

    Platelets

  2. B

    Red blood cells

  3. C

    White blood cells

  4. D

    Plasma

16
Choose one
1 point

A hormone released by an endocrine gland must travel through the blood to a distant target. Which part of blood carries dissolved hormones?

  1. A

    Red blood cells

  2. B

    Platelets

  3. C

    Plasma

  4. D

    White blood cells

17
Written response
1 point

At a damaged blood vessel, which blood component gathers and works with plasma clotting proteins to help form a clot?

18
Choose one
1 point

Which sequence correctly describes the route of blood after it leaves the right ventricle and before it enters the left atrium?

  1. A

    Pulmonary arteries → lung capillaries → pulmonary veins → left atrium

  2. B

    Pulmonary veins → lung capillaries → pulmonary arteries → left atrium

  3. C

    Aorta → body capillaries → venae cavae → left atrium

  4. D

    Venae cavae → lung capillaries → aorta → left atrium

19
Choose one
1 point

In systemic capillaries beside active body tissues, which direction do oxygen and carbon dioxide generally move?

  1. A

    Oxygen moves from tissues into blood, and carbon dioxide moves from blood into tissues.

  2. B

    Oxygen moves from blood toward tissues, and carbon dioxide moves from tissues into blood.

  3. C

    Both oxygen and carbon dioxide move from tissues into blood.

  4. D

    Neither oxygen nor carbon dioxide exchanges between blood and tissues.

20
Written response
1 point

Much of the carbon dioxide traveling from body tissues toward the lungs is converted in red blood cells and carried in plasma in what form?