BIO 242 respiratory system Exam Test
QUESTIONS AND ANSWERS 2024/2025
Which of the following is NOT a function of the respiratory system?
A. electrolyte balance of blood
B. Heat loss
C. enhancing venous return
D. acid-base balance of blood
E. vocalization (CORRECT ANSWER)A. electrolyte balance of blood
Which of the following specifically describes the movement of air into and out of the
lungs?
A. secondary ventilation
B. respiration
C. expiration
D. pulmonary ventilation
E. internal respiration (CORRECT ANSWER)D. pulmonary ventilation
What is external respiration?
A. mitochondrial use of oxygen to produce energy
B. exchange of oxygen and carbon dioxide at the tissue level
C. exchange of oxygen between the atmosphere and lungs
D. the binding of oxygen to hemoglobin (CORRECT ANSWER)C. exchange of
oxygen between the atmosphere and lungs
which cells form the lung tissue component of the respiratory membrane?
A. goblet cells
B. alveolar macrophages
C. type I alveolar cells
D. ciliated cells
E. type II alveolar cells (CORRECT ANSWER)C. type I alveolar cells
What keeps the visceral pleura in close proximity to the parietal pleura?
A. spiderweb like processes extending from the outer covering
B. surface tension of the intrapleural fluid
C. trans-alveolar pressure
D. the mesothelioma are one in the same
E. positive pressure in the intrapleural space (CORRECT ANSWER)B. surface
tension of the intrapleural fluid
the transition from the conducting to the respiratory zone in the lungs occurs at the
A. tertiary bronchi
B. alveolar ducts
C. alveoli
D. terminal bronchioles
E. respiratory bronchioles (CORRECT ANSWER)E. respiratory bronchioles
Why are alveoli arranged in small grape-like clusters?
, A. increase tidal volume
B. increase chest volume and elasticity.
C. maximize surface area.
D. maximize surface area and minimize thickness
E. maximize density and volume (CORRECT ANSWER)D. maximize surface area
and minimize thickness.
What is the primary determinant of air way resistance?
A. presence of mucous
B. traction competency
C. airway radius
D. rate of air exchange
E. compliance (CORRECT ANSWER)C. airway radius
At rest, expiration is a(n) ________ process that involves ________.
A. passive; relaxation of the diaphragm and external intercostals
B. active; the contraction of the diaphragm
C. passive; relaxation of the internal intercostals
D. active; contraction of the internal intercostals
E. active; relaxation of the diaphragm (CORRECT ANSWER)A. passive; relaxation
of the diaphragm and external intercostal
Which of the following descriptions accurately describes Boyle's law?
A .The pressure of gas in your lungs is inversely proportional to the volume in your
lungs.
B. The partial pressure of a gas in the air you breathe in is equal to the total
atmospheric pressure times the fractional concentration of the gas.
C. How well a gas dissolves in a liquid such as blood depends on both its partial
pressure and its solubility. (CORRECT ANSWER)A. the pressure of gas in your
lungs is inversely proportional to the volume in your lungs
Which muscles, when contracted, would increase the volume of air in the thoracic
cavity?
A. diaphragm and external intercostals
B. diaphragm and internal intercostals
C. internal intercostals and external oblique (CORRECT ANSWER)A. diaphragm
and external intercostals
Which pressure is the result of the natural tendency of the lungs to decrease their
size (because of elasticity) and the opposing tendency of the thoracic wall to pull
outward and enlarge the lungs?
A. intrapleural pressure
B. intrapulmonary pressure
C. atmospheric pressure (CORRECT ANSWER)A. intra pleural pressure
During an allergic reaction, which of the following would aid respiration?
A. an increase in the parasympathetic nervous system
B. epinephrine
C. acetylcholine (ACh)
D. histamine (CORRECT ANSWER)B. epinephrine
QUESTIONS AND ANSWERS 2024/2025
Which of the following is NOT a function of the respiratory system?
A. electrolyte balance of blood
B. Heat loss
C. enhancing venous return
D. acid-base balance of blood
E. vocalization (CORRECT ANSWER)A. electrolyte balance of blood
Which of the following specifically describes the movement of air into and out of the
lungs?
A. secondary ventilation
B. respiration
C. expiration
D. pulmonary ventilation
E. internal respiration (CORRECT ANSWER)D. pulmonary ventilation
What is external respiration?
A. mitochondrial use of oxygen to produce energy
B. exchange of oxygen and carbon dioxide at the tissue level
C. exchange of oxygen between the atmosphere and lungs
D. the binding of oxygen to hemoglobin (CORRECT ANSWER)C. exchange of
oxygen between the atmosphere and lungs
which cells form the lung tissue component of the respiratory membrane?
A. goblet cells
B. alveolar macrophages
C. type I alveolar cells
D. ciliated cells
E. type II alveolar cells (CORRECT ANSWER)C. type I alveolar cells
What keeps the visceral pleura in close proximity to the parietal pleura?
A. spiderweb like processes extending from the outer covering
B. surface tension of the intrapleural fluid
C. trans-alveolar pressure
D. the mesothelioma are one in the same
E. positive pressure in the intrapleural space (CORRECT ANSWER)B. surface
tension of the intrapleural fluid
the transition from the conducting to the respiratory zone in the lungs occurs at the
A. tertiary bronchi
B. alveolar ducts
C. alveoli
D. terminal bronchioles
E. respiratory bronchioles (CORRECT ANSWER)E. respiratory bronchioles
Why are alveoli arranged in small grape-like clusters?
, A. increase tidal volume
B. increase chest volume and elasticity.
C. maximize surface area.
D. maximize surface area and minimize thickness
E. maximize density and volume (CORRECT ANSWER)D. maximize surface area
and minimize thickness.
What is the primary determinant of air way resistance?
A. presence of mucous
B. traction competency
C. airway radius
D. rate of air exchange
E. compliance (CORRECT ANSWER)C. airway radius
At rest, expiration is a(n) ________ process that involves ________.
A. passive; relaxation of the diaphragm and external intercostals
B. active; the contraction of the diaphragm
C. passive; relaxation of the internal intercostals
D. active; contraction of the internal intercostals
E. active; relaxation of the diaphragm (CORRECT ANSWER)A. passive; relaxation
of the diaphragm and external intercostal
Which of the following descriptions accurately describes Boyle's law?
A .The pressure of gas in your lungs is inversely proportional to the volume in your
lungs.
B. The partial pressure of a gas in the air you breathe in is equal to the total
atmospheric pressure times the fractional concentration of the gas.
C. How well a gas dissolves in a liquid such as blood depends on both its partial
pressure and its solubility. (CORRECT ANSWER)A. the pressure of gas in your
lungs is inversely proportional to the volume in your lungs
Which muscles, when contracted, would increase the volume of air in the thoracic
cavity?
A. diaphragm and external intercostals
B. diaphragm and internal intercostals
C. internal intercostals and external oblique (CORRECT ANSWER)A. diaphragm
and external intercostals
Which pressure is the result of the natural tendency of the lungs to decrease their
size (because of elasticity) and the opposing tendency of the thoracic wall to pull
outward and enlarge the lungs?
A. intrapleural pressure
B. intrapulmonary pressure
C. atmospheric pressure (CORRECT ANSWER)A. intra pleural pressure
During an allergic reaction, which of the following would aid respiration?
A. an increase in the parasympathetic nervous system
B. epinephrine
C. acetylcholine (ACh)
D. histamine (CORRECT ANSWER)B. epinephrine
