A.1.3 Respiratory System Quiz

What is the primary function of the respiratory system?

• To digest food and absorb nutrients

• To pump blood throughout the body

• To facilitate gas exchange between the environment and body

• To filter waste products from the blood

Which of the following structures is the major muscle of respiration?

• Bronchi

• Diaphragm

• Larynx

• Pharynx

Where does gas exchange primarily take place in the respiratory system?

• In the trachea

• In the bronchi

• In the alveoli

• In the larynx

What is the function of the larynx besides being the 'voice box'?

• It warms the incoming air

• It moistens the air

• It protects the trachea from foods and fluids

• It filters out large particles

Which volume of air represents the total lung capacity (TLC)?

• The volume after normal exhalation

• The volume that can be forcibly exhaled

• The volume after maximum inhalation

• The volume during normal breathing

What is the vital capacity (VC) of the lungs?

• The volume of air breathed in one normal breath

• The maximum volume that can be exhaled after maximum inhalation

• The volume remaining after maximum exhalation

• The total volume of the lungs

Which of the following is NOT measured by a spirometer?

• Tidal volume

• Vital capacity

• Residual volume

• Inspiratory reserve volume

During inhalation, what happens to the diaphragm?

• It relaxes and moves upward

• It contracts and moves downward

• It remains stationary

• It moves sideways

What causes air to flow into the lungs during inspiration?

• Higher pressure inside the lungs

• Equal pressure inside and outside

• Lower pressure inside the lungs

• Muscular contraction of the bronchi

Which structures warm, moisten, and filter the air?

• Alveoli and bronchioles

• Trachea and bronchi

• Pharynx and larynx

• Nasal cavity only