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Inhaled air is first warmed and moistened by the:

Pharynx

Larynx

Nostrils/nares

Alveoli

Answer and Explanation

The Correct Answer is C

A. Pharynx: Transports air but is not primarily responsible for warming/moistening.

B. Larynx: Functions in voice production and airway protection.

C. Nostrils/nares: Correct; nasal passages warm, moisten, and filter the air.

D. Alveoli: Site of gas exchange, not air conditioning.

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Correct Answer is C

Explanation

A. Bronchi: Contain cartilage and some smooth muscle but are not the primary regulators of airflow.

B. Larynx: Functions in sound production and airway protection, not airflow regulation to alveoli.

C. Bronchioles: Correct; they are lined with smooth muscle that controls airflow to alveoli.

D. Trachea: A rigid structure with cartilage rings; does not regulate airflow via muscle tone.

A. Surrounded by rings of cartilage B. Upper respiratory structures C. Collectively referred to as the bronchial tree D. The sites of the exchange of respiratory gases

Correct Answer is C

Explanation

A. Surrounded by rings of cartilage: Only the larger bronchi are surrounded by cartilage; bronchioles and alveoli are not.

B. Upper respiratory structures: These are part of the lower respiratory tract.

C. Collectively referred to as the bronchial tree: This is the correct term for the branching airway system from the trachea to alveoli.

D. The sites of the exchange of respiratory gases: Only the alveoli are directly involved in gas exchange.

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Inhaled air is first warmed and moistened by the:

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Naxlex Comprehensive Predictor Exams

These respiratory structures are made up of mostly smooth muscles and determine the flow of air to the alveoli:

Correct Answer is C

Explanation

The bronchi, bronchioles, and alveoli are:

Correct Answer is C

Explanation

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