MEDIUM
Lower Secondary Stage 8
IMPORTANT
Earn 100
Describe the main function of the heart.
Important Questions on Respiration and Circulation
MEDIUM
Lower Secondary Stage 8
IMPORTANT
Complete the table to show the names and functions of the types of blood vessels.
| Name of vessel | Function |
| Arteries | |
| Veins | |
| Supply cells with substances they need from the blood. |
MEDIUM
Lower Secondary Stage 8
IMPORTANT
Describe how eating too many fatty foods can affect the arteries.
MEDIUM
Lower Secondary Stage 8
IMPORTANT
Explain what happens if muscle tissue in the heart does not get enough blood.
MEDIUM
Lower Secondary Stage 8
IMPORTANT
The diagram shows part of the circulatory system. Write down the letter of the vessel that carries blood that is higher in oxygen.
MEDIUM
Lower Secondary Stage 8
IMPORTANT
The diagram shows part of the circulatory system. Write down the letter of the vessel that has thick and strong walls.
MEDIUM
Lower Secondary Stage 8
IMPORTANT
The diagram shows part of the circulatory system. Write down the letter of the vessel that carries blood that is lower in oxygen.
MEDIUM
Lower Secondary Stage 8
IMPORTANT
In the diagram, the wall of chamber W is thicker than the chamber on the other side of the heart. Explain why this is.
MEDIUM
Lower Secondary Stage 8
IMPORTANT
Explain why the circulatory system is described as a double circulatory system.
