The Human Circulatory System - SAP Education...The Human Circulatory System SAPSCSP5&6_W14 Page 2/8 Taken from Nail thoSe McQs! PriMary ScieNce UPPer Block 5/6 5.graph below shows

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P5/6 science

The Human Circulatory System

SAPSCSP5&6_W14Page 1/8

Taken from Nail thoSe McQs! PriMary ScieNce UPPer Block 5/6

1. The arrows, S, T, U and V, represent the blood vessels in the human circulatory system as shownbelow.

Head

Heart

Lungs

S

T

U

V

Which blood vessels contain blood which is rich in oxygen?(1) S and T (3) T and U(2) S and U (4) T and V ( )

Study the diagram below and answer questions 2 to 4.

J L

K

2. The three types of blood vessels, J, K and L, are part of a human body. Which organ in the humanbody does L flow back to next?(1) lungs (3) heart(2) brain (4) stomach ( )

3. Which one of the differences between blood vessels J and L is correct?(1) Blood vessel J has thinner walls than blood vessel L.(2) Blood vessel J carries blood towards the heart while blood vessel L carries blood away from the

heart.(3) Blood vessel J carries blood poor in oxygen while blood vessel L carries blood rich in oxygen.(4) Blood vessel J carries digested food and oxygen while blood vessel L carries carbon dioxide and

waste substances. ( )

4. What is the possible reason for blood vessel K to have the thinnest walls among all the bloodvessels?(1) To ensure a constant flow of oxygen(2) To allow the exchange of materials to take place easily(3) To ensure that the heart will pump continuously(4) To increase the blood flow between the walls ( )


P5/6 science




5. The graph below shows four samples of blood drawn from different blood vessels in a humanbody.

Amount of oxygen

Samples of bloodW X Y Z

Which sample is most likely to be drawn from a blood vessel that carries blood from the lungs to the heart?(1) Sample W (3) Sample Y(2) Sample X (4) Sample Z ( )

Answers: 1. 1 2. 3 3. 4 4. 2 5. 1


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The diagram below shows the different systems in the human body working together. Study it carefully and answer questions 1 and 2.

G

E F Body

carbon dioxideoxygen

digested food

digested food and oxygen

carbon dioxide and

wastes

1. Based on the diagram above, what are systems F and G?

Systems

F G

(1) Circulatory Digestive

(2) Circulatory Respiratory

(3) Digestive Respiratory

(4) Respiratory Circulatory ( )

2. What is the relationship between systems E and F?(1) System E helps to break the food down into simpler substances in order for System F to absorb

and transport it to the rest of the body.(2) System F transports the food to System E to break it down into simpler substances.(3) System E breaks down the food into smaller pieces to let System F digest it completely.(4) System F produces digestive juices for System E to carry out digestion. ( )

3. Which statement(s) about the difference(s) between the artery and vein is/are correct?A. The artery carries oxygen while the vein carries carbon dioxide.B. The artery has thick walls but the vein has thin walls.C. The artery carries blood towards the heart while the vein carries blood away from the heart.

(1) A only(2) C only(3) A and B only(4) A, B and C ( )


P5/6 science


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4. Which system in the human body works together with the circulatory system to ensure that the rightgases are circulated around the body?(1) digestive system(2) muscular system(3) skeletal system(4) respiratory system ( )

5. A living organism is not able to survive long without air. In a human body, which system will beaffected first when it has no air?(1) digestive system(2) circulatory system(3) respiratory system(4) muscular system ( )

Answers: 1. 2 2. 1 3. 3 4. 4 5. 3


P5/6 science




1. Which of the following diagrams shows the circulation of blood in our body correctly?

(1)

Heart Lungs Rest of the body

(2)

Lungs Heart Rest of the body

(3)

Lungs Heart Rest of the body

(4)

Heart Lungs Rest of the body

( )

2. The diagram below shows a human heart.

XY

Two graphs are drawn to represent the amount of gases in the two chambers, X and Y.

Amount of gas in X

Amount of gas in Y

S T S T


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What could gases S and T be?

S T

(1) oxygen oxygen

(2) oxygen carbon dioxide

(3) carbon dioxide oxygen

(4) carbon dioxide carbon dioxide( )

3. The diagram below shows the circulatory system. The arrows, A, B, C and D, represent the bloodvessels carrying blood in the human body.

Lungs Heart BodyA B

D C

Which two arrows represent the blood vessels which carry blood poor in oxygen?(1) A and B (3) B and C(2) A and C (4) C and D ( )

Answers: 1. 3 2. 2 3. 4


P5/6 science




1. Lance cycled continuously for half an hour on his racer up the hill and then took a fifteen-minuterest. Which graph shows his pulse rate during his training session?(1) Pulse rate

Time (min)0

(3) Pulse rate

Time (min)0

(2) Pulse rate

Time (min)0

(4) Pulse rate

Time (min)0 ( )

2. Why are the walls of the arteries thicker than those of the veins?(1) The arteries have to carry blood rich in oxygen.(2) The arteries have to pump more blood to all the cells.(3) The walls of the arteries are thick so that they can take the high pressure.(4) The walls of the arteries are thick as they need to carry more materials. ( )


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3. Arrows E, F, G and H show the paths taken by the blood in the circulatory system.

Lungs

E

Heart

Rest of the body

F

H

G

Which one of the following bars in the graph shown below does not represent the correct composition of oxygen and carbon dioxide for each blood path?

Composition of gases

Blood pathsE F G H

Legend:oxygencarbon dioxide

(1) (2) (3) (4)

( )

Answers: 1. 1 2. 3 3. 1

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The Human Circulatory System - SAP Education...The Human Circulatory System SAPSCSP5&6_W14 Page 2/8 Taken from Nail thoSe McQs! PriMary ScieNce UPPer Block 5/6 5.graph below shows