Quiz on Circulatory System
1.
(a)
(b)
(c)
(d)
The human cardiovascular system
helps maintain a constant body temperature
carries cells that help protect the body from disease
helps the body maintain homeostasis
all the above
2.
(a)
(b)
(c)
(d)
Which type of blood vessel is both strong and elastic?
Capillary
Artery
Vein
Venule
3.
(a)
(b)
(c)
(d)
The smallest and most numerous blood vessels in the body are the;
Venules
Veins
Arteries
Capillaries
4.
(a)
(b)
(c)
(d)
An artery ;
Usually carries oxygen rich blood
Has thin , slightly elastic walls
Has valves that prevent blood from flowing backwards
All of the above
5.
(a)
(b)
(c)
(d)
Vessels that carry blood away from the heart are called
Veins
Capillaries
Arteries
Venules
6.
(a)
(b)
(c)
(d)
Mature red blood cells ;
Can live for about a year
Are the largest cells in the body
Promote clotting
Do not have a nucleus
7.
(a)
(b)
(c)
(d)
The iron containing molecule in the red blood cells is called;
Plasma
Ferric oxide
Haemoglobin
Carbonic acid
8.
(a)
(b)
(c)
(d)
Red blood cells;
Transport respiratory gases
Combat bacterial infection
Destroy viruses
Transport cholesterol
9.
(a)
(b)
(c)
(d)
Pulmonary circulation flows to and from;
Stomach
Heart
Intestines
Lungs
10. The heart chamber that receives blood from the venae cavae is the;
(a) Left atrium
(b) Right atrium
(c) Left ventricle
(d) Right ventricle
11. The ventricle are;
(a) The upper chamber s of the heart
(b) The chambers of the heart that pump blood to the lungs and to the rest of the body
(c) The chambers of the heart that receive blood from the lungs and rest of the body
(d) Lower chambers of the heart that contract separately
12. Blood entering the right atrium;
(a) Is full of oxygen
(b) Is returning from the lungs
(c) Is deoxygenated
(d) Is low in plasma and platelets
13. Oxygenated blood from the lungs is received by the ;
(a) Left ventricle
(b) Right atrium
(c) Left atrium
(d) Right ventricle
14. The pacemaker responsible for starting heartbeat;
(a) Is located in the brain
(b) Squeezes the ventricles shut
(c) Is a small bundle of cells at the entrance to the right atrium
(d) Is in the aorta
15. Hypertension is another name for what condition?
(a) Anemia
(b) Stroke
(c) High blood pressure
(d) Heart murmur
16. In the wall of the heart , the thick layer of the muscle is called the;
(a) Epithelial tissue layer
(b) Pericardium
(c) Connective tissue layer
(d) myocardium
17. Which is the correct direction of blood flow?
(a) right atrium - right ventricle - pulmonary artery
(b) right atrium - left atrium - pulmonary artery
(c) left ventricle-pulmonary artery-aorta
(d) left ventricle-left atrium-pulmonary artery
18. In the heart, the mixing of oxygen-rich and oxygen-poor blood is prevented by the;
(a) Mitral valve
(b) Tricuspid valve
(c) Septum
(d) Pericardium
19. When an infection occurs, the number of;
(a) Red blood cells increases
(b) Red blood cells decreases
(c) White blood cells increases
(d) White blood cells decreases
20. Which of the following is NOT a function of blood?
(a) Regulate filtration
(b) Regulate body temperature
(c) Transport nutrients
(d) Fight infection
21. How much blood does the human body contain?
(a) 1-2 litres
(b) 4-6 litres
(c) 8-10 litres
(d) 12-14 litres
22. Pulse rate in a healthy adult man is _______ beats/minute (at rest).
(a) 62-66
(b) 72-78
(c) 86-90
(d) 90-94
23. This statement is not true:
(a) All veins carry deoxygenated blood.
(b) Veins contain valves.
(c) Veins are thin-walled.
(d) Veins return blood from the various parts of the body to the heart
24. Identify the blood vessel 'A' in this diagram
(a)
(b)
(c)
(d)
Aorta
Pulmonary artery
Inferior vena cava
Carotid artery
25. Which blood vessels carry blood from heart to various parts of the body?
(a) Veins
(b) Capillaries
(c) Arteries
(d) All of these
26. Identify the blood vessel 'D' in this diagram.
(a) Pulmonary Trunk
(b) Aorta
(c) Inferior vena cava
(d) Superior vena cava
27. This statement is not true :
(a) Right ventricle pumps blood to various parts of the body.
(b) Valves are present between auricles and ventricles to prevent backflow of blood.
(c) Pulmonary veins carry oxygenated blood.
(d) Left side of the heart contains oxygenated blood.
28. Due to presence of _______ , back flow of blood is prevented in veins.
(a) Valves
(b) Septa
(c) Thick walls
(d) Arteries
29. Very fine vessels called capillaries connect arteries and veins to each other.
Ο True
Ο False
1. What are the main components of the circulatory system?
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2. What are the main differences between arteries, veins and capillaries?
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3. What are the major components of human blood and their functions?
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4. What is the function of red blood cells?
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5. Name two components that are transported in solution by the plasma?
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6. What factors affect how much oxygen can be carried by haemoglobin?
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7. How are products of digestion, oxygen, carbon dioxide, nitrogenous waste, ions and
hormones transported around the body?
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8. Do all arteries carry oxygenated blood?
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9. What is the difference between systolic and diastolic pressure?
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10. Which ventricular is larger and muscular?
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11. What is the main function of the valves?
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12. Where does the aorta carry blood to?
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13. Where does the pulmonary artery carry blood to?
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14. Where are the coronary arteries located in the heart?
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15. What is the difference between pulmonary vein and pulmonary arteries?
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16. What makes our heart beat?
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