1. The function of the systemic circuit is to transport

A) carbon dioxide and nutrients to the lungs only

B) carbon dioxide and nutrients to tissues in the body

C) oxygen and nutrients to the lungs only

D) oxygen and nutrients to tissues in the body

2. Which of the following statements is TRUE?

A) Diffusion is another term to describe a circulation system.

B) Fluid in a closed circulatory system is under pressure.

C) Grasshoppers have a four chambered heart.

D) Fish have an open circulatory system.

3. The function of the circulatory system is

A) digesting food

B) movement

C) protecting the body

D) transporting nutrients

4. Which of the following would cause a heart attack?

A) scar tissue in the heart muscle

B) a blood clot moving through the heart

C) rupture of a coronary artery

D) a blood clot blocking a blood vessel supplying the heart

5. Heart beats are maintained by

A) electrical impulses within specialized heart tissue

B) blood flow

C) drinking stimulants such as coffee

D) valves in the heart

6. The function of red blood cells is to

A) aid in the clotting process after an injury

B) transport ions such as potassium around the body

C) defend the body against infection

D) transport oxygen from the lungs around the body

7. _____________ transport blood away from the heart; _____________ transport blood to the heart.

A) arterioles; venules

B) venules; arterioles

C) arteries; veins

D) veins; arteries

8. Which chambers of the heart hold oxygen rich blood?

A) right ventricle and left ventricle

B) left atrium and left ventricle

C) right atrium and right ventricle

D) right atrium and left atrium

9. Which of the following features would you expect to find associated with a surface functioning in gas exchange?

A) all of the above

B) rich blood supply

C) moist surface

D) large surface area

E) thin layer of cells

10. An open circulatory system

A) consists of veins and arteries

B) lacks a heart

C) consists only of capillaries

D) lacks circulating fluid