1. Which body system supplies nutrients and oxygen to the cells?

a) digestive system

c) Circulatory system

c. skeletal system

d. muscular system

2. How is the muscle of the heart different from other muscles?

a) It is flat,

c) It is bulky

b) It contracts rhythmically

d) It stores much energy

3. Which clrculation brings blood to the lungs for oxygenation?

a) systemic circulation

c) pulmonary circulation

b) general clrculation
d) exchange of O2 and CO2

4. What glves color to the red blood cells?

a) calcium

c) plasma


b) phosphorus

d) iron

5. When you accidentally cut your finger, what will make the bleeding
stop?

a) clotting of blood

c) appearance of plasma

b) formation of platelets

d) lack of oxygen


6. Why does blood go upward as it travels through the velns back to the heart?

a) There are valves in the veins.

b) The veins are thick.

c) Blood flows slowly.

d) Blood flows fast.

7. Where does the exchange of nutrients in the blood and wastes from the cells take place?

a) arteries

c) capillaries

b) veins

d) venules

8. Which of the following is a risk factor of heart disease?

a) cigarette smoking

b) regular exercise

c) proper nutrition

d) physical checkup

9. Which disease is caused by the abnormal production of white blood

c) proper nutrition
cells?

a) anemia

b) leukemia

c) proper nutrition

d) physical checkup​