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Respiratory Structure and Function Quiz

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Questions and Answers

Which structure is the site of efficient gas exchange in the lung?

Alveolar duct

Alveolus

Alveolar septa

Pulmonary capillary network (correct)

How many capillaries are there per alveolus?

100-200

200-400

500-1000 (correct)

More than 1000

What may facilitate the spread of pulmonary infection?

Bronchiole-alveolar canals (of Lambert)

Pores of Kohn (correct)

Interbronchiolar channels (of Martin)

Interalveolar pores

What is the major component of the chest wall that allows for the movement of the lung root with inferior inspiration?

Pulmonary ligament Signup and view all the answers

What is one of the functions of the conducting airways?

Transporting O2/CO2 to and from gas exchange airways Signup and view all the answers

What is the most important function of the respiratory system?

Supplying metabolic needs of tissues with O2 Signup and view all the answers

What opposes the tendency of alveoli to collapse?

Lung parenchyma with interwoven elastic and connective tissue fibers Signup and view all the answers

What is the function of the Pores of Kohn?

Allowing for collateral ventilation between alveoli Signup and view all the answers

What do the turbinates in the nasal cavity primarily contribute to?

Warming inhaled air Signup and view all the answers

Which structure in the conducting airways produces turbulent airflow in the nasal cavity?

Mucous glands and cells Signup and view all the answers

What is the primary function of the mucociliary escalator?

Removing phlegm that could cause infection Signup and view all the answers

What allows for sampling of the external environment with each breath?

Metabolism by cells of the lung Signup and view all the answers

What removes CO2 (H+ ions) from the body?

(H+ ions) being produced by cellular metabolism and removed by ventilation Signup and view all the answers