1. Science Quiz
Did you understand???????

2. Instruction: circle the most appropriate
letter to match the question or
statement given.
Instructions

3.  1. The human circulatory system
circulates:
A. Blood
B. Nerve cells
C. Undigested food
Question 1

4. 2. The liquid part of blood is:
A. Plasma
B. Only water
C. Haemoglobin
Question 2

5.  3. The blood cells that carry oxygen
and carbon dioxide are:
A. White
B. Red
C. Colorless
Question 3

6. 4.The blood cell that carries oxygen
and carbon dioxide are:
A. White blood cells
B. Platelets
C. Red blood cells
Question4

7. 5. A person with a low white blood
cell count would have difficulty:
A. Fighting diseases
B. Breathing
C. Moving
Question 5

8. 6. The blood vessel with the thinnest
wall is the:
A. Vein
B. Capillary
C. Artery
Question 6

9. 7. The blood vessel with valves to
allow one way blood flow is:
A. Capillaries
B. Artery
C. Vein
Question 7

10. 8. In general arteries carry blood:
A. Away from the heart
B. Toward the heart
C. In any direction
Question 8

11. 9.How many atria are in the human
heart?
A. None
B. One
C. Two
Question 9

12. 10. The heart chamber with the
thickest muscular walls is the:
A. Left ventricle
B. Right ventricle
C. Aorta
Question 10

13. 11. What is the name of the blood
vessel that caries the blood from the
heart to the lungs?
A. Aorta
B. Pulmonary artery
C. Renal artery
Question 11

14. 12. What is the name of the blood
vessel that transports blood from the
left ventricle to the rest of the body?
A. Aorta
B. Pulmonary artery
C. Hepatic artery
Question 12

15. 13. The red pigment that carries
oxygen or carbon dioxide in red
blood cells is:
A. Haemoglobin
B. Medulla
C. Systole
Question 13

16. 14. When a person has a heart
attack what artery is blocked?
A. Pulmonary artery
B. Renal artery
C. Coronary artery
Question 14

17. 15. Heart beat is controlled in the
part of the brain called the:
A. Cerebellum
B. Brain stem
C. SA node
Question 15