4M Self-Study Task (24 Oct 2023)

Name (e.g Eddie Suen)

Class

• 4A
• 4B
• 4C

Class no.

What is the name of the 'heart muscles'?

• skeletal muscles
• smooth muscles
• cardiac muscles
• coronary muscles

What is the name of the valves between the left atrium and the left ventricle?

What is the name of the valves between the right atrium and the right ventricle?

What is the function of the coronary arteries?

• supply oxygen and nutrients to the heart muscles
• supply oxygen and nutrients to the heart chambers
• carry carbon dioxide and other waste away from the heart muscles
• carry carbon dioxide and other waste away from the heart chambers

Which of the following heart chambers carry oxygenated blood? (You may select more than one)

• left atrium
• left ventricle
• right atrium
• right ventricle

The wall of the left ventricle is thicker than that of the right ventricle. Why?

• to provide greater force to pump blood to all parts of the body (except the lungs)
• to withstand high blood pressure generated by the left ventricle
• to squeeze the blood faster
• to prevent the backflow of blood back to the left atrium

Name the structure of the heart which is used to prevent the mixing of oxygenated blood and deoxygenated blood in the two sides of the heart.