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Respiratory System Overview: Anatomy, Physiology, and Pathophysiology

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Respiratory System Overview: Anatomy, Physiology, and Pathophysiology

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Questions and Answers

What is the primary function of the nasal and oral cavities in the respiratory system?

To trap foreign bodies and produce mucus

To warm and humidify inspired air (correct)

To regulate the nasal cycle

To facilitate gas exchange in the alveoli

What is the approximate periodicity of the nasal cycle in the human population?

2 hours (correct)

1 hour

4 hours

6 hours

What is the purpose of the pharynx in the respiratory system?

To regulate the nasal cycle

To facilitate gas exchange in the alveoli

To connect the nose and mouth to the esophagus (correct)

To produce mucus and trap foreign bodies

What is the site of gas exchange in the lungs?

Alveoli Signup and view all the answers

What is the total number of alveoli in the human lungs?

300 million Signup and view all the answers

What is the primary function of Type 1 pneumocytes in the alveolar sac?

to facilitate the diffusion of gases Signup and view all the answers

What is the purpose of the intrapleural fluid?

to maintain a subatmospheric pressure within the intrapleural space Signup and view all the answers

During inspiration, what happens to the intrapleural pressure and the transpulmonary pressure?

intrapleural pressure decreases, transpulmonary pressure increases Signup and view all the answers

What is the primary function of goblet cells in the respiratory epithelium?

to trap foreign bodies entering the system Signup and view all the answers

What is the characteristic of the breathing pattern in patients with respiratory disease?

pursed lip breathing Signup and view all the answers