Respiratory System Quiz

What is the main purpose of the respiratory system?

• To digest food

• To pump blood to the heart

• To regulate body temperature

• To bring oxygen into the body

Which part of the body protects the lungs?

• Skull

• Spine

• Rib cage

• Pelvis

What is the dome-shaped muscle located just below the lungs?

• Diaphragm

• Biceps

• Quadriceps

• Triceps

What is the function of the epiglottis?

• To regulate body temperature

• To aid in digestion

• To filter air entering the body

• To cover the air-only passage of the pharynx

Where does the exchange of oxygen and carbon dioxide take place?

• Pharynx

• Trachea

• Bronchi

• Alveoli

What is the process by which carbon dioxide is created in cells?

• Osmosis

• Photosynthesis

• Respiration

• Diffusion

What is the main function of the cilia in the respiratory system?

• To remove dust and other substances from entering the body

• To produce mucus for the lungs

• To regulate body temperature

• To aid in digestion

Which part of the respiratory system carries both food and air?

• Trachea

• Alveoli

• Bronchi

• Pharynx

What is the total number of alveoli inside a person's lungs?

• 1 million

• 10 million

• 600 million

• 100 million

What is the name of the tiny blood vessels that surround the alveoli in the lungs?

• Capillaries

• Arteries

• Veins

• Venules