W3 Th Biology Class 5

How many chambers are there in the human heart?

• 2

• 3

• 4

• 5

Which chamber of the heart receives oxygen-rich blood from the lungs?

• Right atrium

• Right ventricle

• Left atrium

• Left ventricle

Which of the following separates the left and right sides of the heart?

• Septum

• Valve

• Artery

• Vein

Which chamber of the heart pumps blood to the lungs?

• Right atrium

• Right ventricle

• Left atrium

• Left ventricle

What is the function of heart valves?

• To produce oxygen

• To prevent backflow of blood

• To carry nutrients

• To contract the heart muscle