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DHA Nursing Licensing Exam The Respiratory System — practice questions

Explore 28 free The Respiratory System questions in DHA Nursing Licensing Exam Anatomy & Physiology. Open each question or exercise to read its content, reference answers and available explanation.

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The Respiratory System questions and exercises with answers

Showing questions 1–28 of 28.

The respiratory system divides into how many zones?Read the answer and worked solution →Where does gas exchange occur?Read the answer and worked solution →What covers the opening of the trachea?Read the answer and worked solution →The trachea is also known as the:Read the answer and worked solution →Alveoli are described as sacs shaped like:Read the answer and worked solution →Pulmonary surfactant reduces alveolar:Read the answer and worked solution →The pleural cavity lies between which layers?Read the answer and worked solution →Which cell secretes pulmonary surfactant?Read the answer and worked solution →How many cartilage pieces form the trachea?Read the answer and worked solution →What prevents the trachea from collapsing?Read the answer and worked solution →Pleural fluid is secreted by which cells?Read the answer and worked solution →What does pleural fluid do to the pleural surfaces?Read the answer and worked solution →Pulmonary ventilation depends on how many pressures?Read the answer and worked solution →The pulmonary artery carries blood that is:Read the answer and worked solution →Boyle's law relates a gas's volume to its:Read the answer and worked solution →If a gas volume increases, its pressure:Read the answer and worked solution →External respiration occurs in the:Read the answer and worked solution →Internal respiration occurs in the:Read the answer and worked solution →Gas exchange occurs by which process?Read the answer and worked solution →Chemoreceptors can sense oxygen that is:Read the answer and worked solution →Conducting or respiratory zoneRead the answer and worked solution →Match the respiratory structureRead the answer and worked solution →Order the path of inhaled airRead the answer and worked solution →True or false about breathingRead the answer and worked solution →External or internal respirationRead the answer and worked solution →Count the respiratory factsRead the answer and worked solution →Sort the respiratory partsRead the answer and worked solution →Respiratory system bingoRead the answer and worked solution →

Worked practice questions

The respiratory system divides into how many zones?

  1. Two
  2. Nine
  3. Six
  4. Ten
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Correct answer: A. Two

1. The division is functional, not anatomical. 2. One zone carries air and one exchanges gas. 3. The respiratory system can be divided into a conducting zone and a respiratory zone. 4. So the answer is two. _Source: OpenStax 'Anatomy and Physiology 2e', Ch 22 'The Respiratory System'_

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Where does gas exchange occur?

  1. Retaining zone
  2. Respiratory zone
  3. Regulatory zone
  4. Refractory zone
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Correct answer: B. Respiratory zone

1. One zone only moves air about. 2. The other is where oxygen actually crosses. 3. The gas exchange occurs in the respiratory zone. 4. So the answer is the respiratory zone. _Source: OpenStax 'Anatomy and Physiology 2e', Ch 22 'The Respiratory System'_

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What covers the opening of the trachea?

  1. Epidermis
  2. Epithelium
  3. Epiglottis
  4. Epicardium
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Correct answer: C. Epiglottis

1. Swallowing must not send food into the airway. 2. A flap of elastic cartilage closes it off. 3. The epiglottis is a flexible piece of elastic cartilage that covers the opening of the trachea. 4. So the answer is the epiglottis. _Source: OpenStax 'Anatomy and Physiology 2e', Ch 22 'The Respiratory System'_

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