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Biology Quiz - Human Circulatory System
1. The human circulatory system circulates:
A blood
B nerve cells
C undigested food
2. The liquid part of blood is:
A plasma
B only water
C haemoglobin
3. The blood cells that carry oxygen and carbon dioxide are:
A white
B red
C colourless
4. Clotting is the function of:
A white blood cells
B platelets
C red blood cells
5. A person with a low white blood cell count would have difficulty:
A fighting disease
B breathing
C moving
6. The blood vessel with the thinnest wall is the:
A vein
B capillary
C artery
7. The blood vessel with valves to allow one-way blood flow is the:
A capillary
B artery
C vein
8. Arteries carry blood:
A away from the heart
B to the heart
C in any direction
9. How many atria are in the human heart?
Anone
Bone
Ctwo
10. The heart chamber with the thickest muscular wall is the:
Aleft ventricle
Bright ventricle
Caorta
11. What is the name of the blood vessel that carries blood from the heart to the lungs?
Aaorta
Bpulmonary artery
Crenal artery
12. What is the name of the blood vessel that transports blood from the left ventricle to the rest of the body?
Aaorta
Bpulmonary artery
Chepatic artery
13. The red pigment that carries oxygen or carbon dioxide in red blood cells is:
Ahaemoglobin
Bmedulla
Csystole
14. When a person has a heart attack, what artery is blocked?
Apulmonary
Brenal
Ccoronary
15. Heartbeat is controlled in the part of the brain called the:
Acerebrum
Bbrain stem
CSA node

 

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