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MOHAP Licensing Exam The Respiratory System — practice questions — page 3

Explore 132 free The Respiratory System questions in MOHAP Licensing Exam 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 61–90 of 132.

Which name is given to the mode of breathing that occurs at rest without conscious thought?Read the answer and worked solution →A shallow breath produced by contracting the intercostal muscles is called what?Read the answer and worked solution →Which accessory muscles contract during forced inspiration?Read the answer and worked solution →About how much air enters the lungs during one quiet breath?Read the answer and worked solution →How much air can a man forcefully exhale past a normal tidal expiration?Read the answer and worked solution →Which respiratory volume keeps the alveoli from collapsing?Read the answer and worked solution →Total lung capacity is the sum of which volumes?Read the answer and worked solution →What are the approximate total lung capacities quoted for men and for women?Read the answer and worked solution →Vital capacity is which sum, and what range is quoted for it?Read the answer and worked solution →Functional residual capacity is the sum of which two volumes?Read the answer and worked solution →What is anatomical dead space?Read the answer and worked solution →Total dead space is made up of what?Read the answer and worked solution →What is the normal respiratory rate quoted for an adult?Read the answer and worked solution →What respiratory rate is normal for a child under one year of age?Read the answer and worked solution →Which medullary group stimulates the diaphragm and intercostals to produce inspiration?Read the answer and worked solution →Which medullary group drives the accessory muscles used in forced breathing?Read the answer and worked solution →Which pontine centre inhibits the dorsal respiratory group and so controls the overall rate of breathing?Read the answer and worked solution →Which centre stimulates dorsal respiratory group neurons and controls the depth of inspiration?Read the answer and worked solution →Which blood change is the major stimulus that drives the medulla and pons to increase ventilation?Read the answer and worked solution →Where are the peripheral chemoreceptors located?Read the answer and worked solution →Below roughly what arterial oxygen pressure do the peripheral chemoreceptors sharply increase respiratory activity?Read the answer and worked solution →Which brain regions adjust breathing in response to emotion, pain and temperature?Read the answer and worked solution →What fails in central sleep apnoea?Read the answer and worked solution →Which law states that each gas in a mixture exerts its own pressure and that these add up to the total?Read the answer and worked solution →Which law says the amount of a gas dissolving in a liquid depends on its solubility and its partial pressure?Read the answer and worked solution →Why does little nitrogen dissolve in blood despite its high partial pressure in air?Read the answer and worked solution →How does alveolar air differ from atmospheric air?Read the answer and worked solution →In which direction does a gas move between two connected regions?Read the answer and worked solution →Which pairing of terms with their meanings is correct?Read the answer and worked solution →What do the pulmonary arterioles do when alveolar oxygen pressure is high?Read the answer and worked solution →

Worked practice questions

Which name is given to the mode of breathing that occurs at rest without conscious thought?

  1. Forced breathing, or hyperpnea
  2. Costal breathing of the ribs
  3. Quiet breathing, or eupnea
  4. Diaphragmatic deep breathing
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Correct answer: C. Quiet breathing, or eupnea

1. Breathing modes differ in the muscles used and in whether thought is involved. 2. Quiet breathing, also known as eupnea, occurs at rest and requires no cognitive thought. 3. So the third option is correct. 4. Forced breathing, also called hyperpnea, occurs during exercise or deliberate acts such as singing, so it is the opposite case. _Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 22 "The Respiratory System", section 22.3 The Process of Breathing_

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A shallow breath produced by contracting the intercostal muscles is called what?

  1. Diaphragmatic breathing
  2. Forced breathing effort
  3. Quiet resting breathing
  4. Costal shallow breathing
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Correct answer: D. Costal shallow breathing

1. A deep breath is called diaphragmatic breathing and requires the diaphragm to contract. 2. A shallow breath is called costal breathing and requires contraction of the intercostal muscles. 3. In both cases air passively leaves the lungs as the muscle relaxes. 4. So the fourth option is correct and the first names the deep-breath pattern instead. _Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 22 "The Respiratory System", section 22.3 The Process of Breathing_

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Which accessory muscles contract during forced inspiration?

  1. Neck muscles including the scalenes
  2. Abdominal muscles including the obliques
  3. Internal intercostals of the rib cage
  4. Pelvic floor and lower back muscles
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Correct answer: A. Neck muscles including the scalenes

1. Forced breathing uses muscle contraction for both inspiration and expiration. 2. During forced inspiration the neck muscles, including the scalenes, contract. 3. They lift the thoracic wall and so increase lung volume. 4. The obliques and internal intercostals act during forced expiration instead, which is what the second and third options describe. _Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 22 "The Respiratory System", section 22.3 The Process of Breathing_

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