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Respiratory System: Mucus and Cilia Function

12 Questions

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Respiratory System: Mucus and Cilia Function

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Questions and Answers

What is the primary function of the mucus lining the respiratory passageways?

To trap small particles out of the inspired air (correct)

To humidify the inspired air

To warm the inspired air

To increase the surface area of the alveoli

What is the function of the cilia in the respiratory passages?

To absorb oxygen from the inspired air

To humidify the inspired air

To move mucus and entrapped particles toward the pharynx (correct)

To trap small particles out of the inspired air

What is the direction of the 'power stroke' of the cilia in the lungs?

Toward the pharynx (correct)

Toward the trachea

Toward the alveoli

Toward the bronchioles

What is the approximate rate at which the cilia beat?

10-20 times per second Signup and view all the answers

What is the purpose of the cough reflex?

To expel foreign matter from the respiratory passages Signup and view all the answers

What type of epithelium lines the respiratory passages?

Ciliated epithelium Signup and view all the answers

What is the primary pathway for afferent nerve impulses from the respiratory passages?

Through the vagus nerves to the medulla Signup and view all the answers

What is the effect of the sudden opening of the vocal cords and epiglottis during a cough?

Air under high pressure in the lungs explodes outward Signup and view all the answers

What is the purpose of the sneeze reflex?

To clear the nasal passages of foreign matter Signup and view all the answers

Respiratory System: Mucus and Cilia Function

Choose a study mode

Podcast

Questions and Answers

What is the primary function of the mucus lining the respiratory passageways?

What is the function of the cilia in the respiratory passages?

What is the direction of the 'power stroke' of the cilia in the lungs?

What is the approximate rate at which the cilia beat?

What is the purpose of the cough reflex?

What type of epithelium lines the respiratory passages?

What is the primary pathway for afferent nerve impulses from the respiratory passages?

What is the effect of the sudden opening of the vocal cords and epiglottis during a cough?

What is the purpose of the sneeze reflex?

During a cough, what happens to the non-cartilaginous parts of the bronchi and trachea?

What is the approximate volume of air that is rapidly inspired during a cough?

What is the likely velocity of air expelled during a sneeze?

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