Which is a function of the respiratory system?

Oxygen diffuses across the alveolar membrane into the blood.

The alveoli have cilia that help remove foreign particles.

The diaphragm controls respiration.

The bronchioles contain macrophages that phagocytize inhaled bacteria.

Answer and Explanation

The Correct Answer is A

A. Oxygen diffuses across the alveolar membrane into the blood: This is the primary function of the respiratory system, ensuring oxygenation of blood.
B. The alveoli have cilia that help remove foreign particles: Cilia are present in the respiratory tract, but not in the alveoli.
C. The diaphragm controls respiration: The diaphragm assists with breathing but does not "control" respiration, which is regulated by the brainstem.
D. The bronchioles contain macrophages that phagocytize inhaled bacteria: Macrophages are found in alveoli, not the bronchioles.

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Correct Answer is C

Explanation

A. Be monitored for respiratory rate: Important for ongoing assessment but not directly related to the deflation process.
B. Have the cuff pressure checked: Necessary during care but not immediately before deflation.
C. Have the pharynx suctioned: Suctioning clears secretions that could be aspirated when the cuff is deflated.
D. Be administered extra oxygen: Beneficial but not a direct prerequisite for cuff deflation.

A. A nonrebreather mask B. A simple face mask C. A Venturi mask D. A partial rebreathing mask

Correct Answer is C

Explanation

A. A nonrebreather mask: This provides high concentrations of oxygen (60% to 100%) and lacks precise control over oxygen delivery.
B. A simple face mask: Delivers oxygen concentrations between 40% and 60%, but the oxygen concentration varies depending on the client's breathing pattern.
C. A Venturi mask: Provides precise and consistent oxygen delivery, making it the best choice for clients needing an exact concentration of 40% oxygen.
D. A partial rebreathing mask: Delivers concentrations between 50% and 75% without precise control.

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Which is a function of the respiratory system?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

The nurse recognizes that, immediately before a tracheostomy cuff deflation, the patient should:

Correct Answer is C

Explanation

A patient requires a precise concentration of 40% oxygen. Which of the following devices would best allow for this?

Correct Answer is C

Explanation

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