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Respiratory System Functions and Components Quiz

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Respiratory System Functions and Components Quiz

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Questions and Answers

Which component of respiration involves the inflow and outflow of air between the atmosphere and the lung alveoli?

Regulation of ventilation

Pulmonary ventilation (correct)

Diffusion of oxygen and carbon dioxide

Transport of oxygen and carbon dioxide

What is the main function of respiration?

To provide oxygen to the tissues (correct)

To provide carbon dioxide to the tissues

To remove carbon dioxide from the tissues

To remove oxygen from the tissues

How are the lungs expanded and contracted?

By downward and upward movement of the diaphragm (correct)

By diagonal movement

By side-to-side movement

By expansion and contraction of the alveoli

What is the normal pleural pressure at the beginning of inspiration?

-5 centimeters of water Signup and view all the answers

During normal inspiration, what happens to the pleural pressure?

It becomes more negative Signup and view all the answers

What does the diffusion component of respiration involve?

Movement of oxygen and carbon dioxide between alveoli and blood Signup and view all the answers

What is defined as the movement of gas molecules across a membrane?

Respiration Signup and view all the answers

What is the ultimate importance of pulmonary ventilation?

To facilitate gas exchange in the lungs Signup and view all the answers

What is the effect of a slight negative alveolar pressure during normal inspiration?

Pulls air into the lungs Signup and view all the answers

Which of the following is NOT a pulmonary cause of disturbances in alveolar ventilation?

Guillain-Barré syndrome Signup and view all the answers

What is the most common cause of hypoxemia as per the text?

Upper airway obstruction Signup and view all the answers

What was one of the earliest attempts to restore breathing?

Placing a reed in the throat and blowing into the lungs Signup and view all the answers