A&P Quiz 2 prac questions
Gas flow decreases as ________ increases. a)resistance b)pressure c)airway diameter d)friction
a
A decrease in volume leads to a(n) ________ pressure. a)decrease in b)equalization of c)increase in d)zero
c
Contraction of the external intercostal muscles causes which of the following to occur? a)The diaphragm moves downward. b)The rib cage is compressed. c)The thoracic cavity volume decreases. d)The ribs and sternum move upward.
d
The fauces connects which of the following structures to the oropharynx? a)nasopharynx b)laryngopharynx c)nasal cavity d)oral cavity
d
Gas moves from an area of ________ partial pressure to an area of ________ partial pressure.
high to low
4. The pleura that surrounds the lungs consists of two layers, the ________. a)visceral and parietal pleurae. b)mediastinum and parietal pleurae. c)visceral and mediastinum pleurae. d)none of the above
a
A low partial pressure of oxygen promotes hemoglobin binding to carbon dioxide. This is an example of the ________. a)Haldane effect b)Bohr effect c)Dalton's law d)Henry's law
a
Which of the following processes does atmospheric pressure play a role in? a)pulmonary ventilation b)production of pulmonary surfactant c)resistance d)surface tension
a
Which of the following anatomical structures is not part of the conducting zone? a)pharynx b)nasal cavity c)alveoli d)bronchi
c
The pressure difference between the intra-alveolar and intrapleural pressures is called ________. a)atmospheric pressure b)pulmonary pressure c)negative pressure d)transpulmonary pressur
d
Which of the following factors play a role in the oxygen-hemoglobin saturation/dissociation curve? a)temperature b)pH c)BPG d)all of the above
d
A section of the lung that receives its own tertiary bronchus is called the ________. a)bronchopulmonary segment b)pulmonary lobule c)interpulmonary segment d)respiratory segment
a
What is the function of the conchae in the nasal cavity? a)increase surface area b)exchange gases c)maintain surface tension d)maintain air pressure
a
When ventilation is not sufficient, which of the following occurs? a)The capillary constricts. b)The capillary dilates. c)The partial pressure of oxygen in the affected alveolus increases. d)The bronchioles dilate.
a
Which of the following are structural features of the trachea? a)C-shaped cartilage b)smooth muscle fibers c)cilia d)all of the above
a
Which of the following prevents the alveoli from collapsing? a)residual volume b)tidal volume c)expiratory reserve volume d)inspiratory reserve volume
a
The partial pressure of carbon dioxide is 45 mm Hg in the blood and 40 mm Hg in the alveoli. What happens to the carbon dioxide? a)It diffuses into the blood. b)It diffuses into the alveoli. c)The gradient is too small for carbon dioxide to diffuse. d)It decomposes into carbon and oxygen
b
Which of the following occurs during the chloride shift? a)Chloride is removed from the erythrocyte. b)Chloride is exchanged for bicarbonate. c)Bicarbonate is removed from the erythrocyte. d)Bicarbonate is removed from the blood.
b
Which of the following structures separates the lung into lobes? a)mediastinum b)fissure c)root d)pleura
b
Gas exchange that occurs at the level of the tissues is called ________. a)external respiration b)interpulmonary respiration c)internal respiration d)pulmonary ventilation
c
Oxyhemoglobin forms by a chemical reaction between which of the following? a)hemoglobin and carbon dioxide b)carbonic anhydrase and carbon dioxide c)hemoglobin and oxygen d)carbonic anhydrase and oxygen
c
The ________ circulation picks up oxygen for cellular use and drops off carbon dioxide for removal from the body. a)pulmonary b)interlobular c)respiratory d)bronchial
c
What is the role of alveolar macrophages? a)to secrete pulmonary surfactant b)to secrete antimicrobial proteins c)to remove pathogens and debris d)to facilitate gas exchange
c
Which of the following structures is not part of the bronchial tree? a)alveoli b)bronchi c)terminal bronchioles d)respiratory bronchioles
c
