Respiratory System Quiz

What is the name of the tiny air sacs in the lungs where gas exchange happens?

• Bronchi

• Trachea

• Alveoli

• Diaphragm

What is the name of the large muscle below the lungs that helps with breathing?

• Diaphragm

• Trachea

• Esophagus

• Liver

What is the main purpose of the respiratory system?

• To move the body

• To absorb nutrients

• To get oxygen into the body and remove carbon dioxide

• To control body temperature

Which of these is NOT part of the respiratory system?

• Bronchi

• Trachea

• Alveoli

• Septum

What gas do we breathe out as waste?

• Oxygen

• Nitrogen

• Carbon dioxide

• Helium

Blood is carried away from the heart by which type of blood vessel?

• Veins

• Arteries

• Capillaries

• Alveoli

Which blood vessels carry blood back to the heart?

• Arteries

• Veins

• Capillaries

• Bronchioles

What is the main function of red blood cells?

• To fight infections

• To help with digestion

• To carry oxygen

• To stop bleeding

What is the purpose of white blood cells?

• To carry oxygen

• To help fight infections

• To form scabs

• To transport nutrients

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

• Right atrium

• Left atrium

• Right ventricle

• Left ventricle