What is the main function of the respiratory system?

• Circulation

• Digestion

• Breathing

• Gas exchange

Which structure prevents food from entering the trachea?

• Larynx

• Epiglottis

• Pharynx

• Uvula

Where does gas exchange occur in the lungs?

• Trachea

• Bronchi

• Alveoli

• Diaphragm

What muscle is primarily responsible for inhalation?

• Intercostal muscles

• Lungs

• Diaphragm

• Stomach

What is the flap of tissue that covers the trachea during swallowing?

• Diaphragm

• Uvula

• Epiglottis

• Tongue

Which structure is also known as the voice box?

• Trachea

• Larynx

• Pharynx

• Epiglottis

What is the correct pathway of air into the lungs?

• Nose > Larynx > Pharynx > Lungs

• Nose > Trachea > Bronchi > Lungs

• Mouth > Trachea > Lungs > Bronchi

• Nose > Bronchi > Trachea > Lungs

What surrounds the alveoli to facilitate gas exchange?

• Cartilage

• Capillaries

• Arteries

• Veins

What is the role of mucus in the respiratory system?

• Transport oxygen

• Move air

• Trap dust and microbes

• Carry nutrients

Which part of the brain controls breathing?

• Cerebrum

• Cerebellum

• Medulla oblongata

• Spinal cord