1) The human cardiovascular system is comparable in some ways to a car’s:

A) engine.

B) electrical system.

C) cooling system.

D) transmission system.

2) What is the relationship of bone marrow to the cardiovascular system?

A) Bone marrow produces red blood cells.

B) Bone marrow helps keep the blood moving through the body.

C) Bone marrow produces chemicals that help carry carbon dioxide in the blood.

D) Bone marrow breaks down old blood cells.

3) The formed elements account for about what percentage of the total volume of blood?

A) 100 percent

B) 45 percent

C) 75 percent

D) 10 percent

4) Which of the following may be found in blood plasma?

A) water, proteins, nutrients, and ions

B) water, proteins, and ions

C) water and proteins

D) water

5) If a person is unable to clot blood properly, which of the following might be lacking?

A) platelets

B) red blood cells

C) white blood cells

D) ions

6) Many people regularly donate plasma. Which of the following substances is not given when the plasma is donated?

A) electrolytes

B) antibodies

C) water

D) red blood cells

7) Which blood component is made of fragments of cells rather than a complete cell?

A) red blood cells

B) platelets

C) white blood cells

D) plasma

8) Formed elements in the blood consist of all the parts below except:

A) plasma proteins.

B) white blood cells.

C) platelets.

D) red blood cells.

9) Erythrocyte is another term for:

A) plasma protein.

B) white blood cell.

C) platelet.

D) red blood cell.

10) If someone has an iron deficiency in the diet, which part of the blood would this mainly impact?

A) plasma proteins

B) red blood cells

C) platelets

D) white blood cells