What is the primary function of the respiratory system?

• To facilitate gas exchange

• To digest food

• To circulate blood

• To produce hormones

Which structure is responsible for vocalization?

• Trachea

• Larynx

• Alveoli

• Bronchi

What is the role of the diaphragm in breathing?

• It produces mucus to trap particles

• It exchanges gases with the blood

• It filters air entering the lungs

• It contracts to increase thoracic volume during inhalation

Which part of the respiratory system is involved in external respiration?

• Pharynx

• Nasal cavity

• Alveoli

• Larynx

What is the function of the nasal cavity?

• To exchange gases with the blood

• To filter, warm, and humidify inhaled air

• To produce sound

• To transport oxygen in the bloodstream

Which structure prevents food from entering the trachea?

• Epiglottis

• Bronchi

• Diaphragm

• Alveoli

What is the primary role of the alveoli?

• Air filtration

• Sound production

• Mucus production

• Gas exchange

Which part of the respiratory system is a common passageway for both air and food?

• Pharynx

• Trachea

• Bronchi

• Larynx

What is the function of the pleura?

• To transport oxygen

• To surround the lungs and maintain negative pressure

• To produce sound

• To filter air

Which muscles are involved in changing thoracic cavity volume during breathing?

• Leg muscles

• Facial muscles

• Abdominal muscles

• Diaphragm and intercostal muscles