QUIZ 12

The relationship between gas pressure and gas volume is described by ________. Henry's law Boyle's law Dalton's law Charles' law

Boyle's law

Which of the following creates an adhesive force that prevents separation of the parietal and visceral pleurae during ventilation? negative intrapulmonary pressure alveolar fluid surface tension negative intrapleural pressure lung elasticity

alveolar fluid surface tension

Which structure is lined with simple squamous epithelium? trachea alveolus nasopharynx oropharynx

alveolus

For inspiration of air, which of the following happens first? intrapulmonary pressure drops diaphragm descends, thoracic volume begins to increase, and rib cage rises thoracic cavity volume decreases air (gases) flows into lungs

diaphragm descends, thoracic volume begins to increase, and rib cage rise

Air moves out of the lungs when the pressure inside the lungs is ________. equal to the pressure in the atmosphere greater than the intra-alveolar pressure less than the pressure in the atmosphere greater than the pressure in the atmosphere

greater than the pressure in the atmosphere

Which of the following is responsible for holding the lungs to the thorax wall? the visceral pleurae and the changing volume of the lungs the diaphragm and the intercostal muscles alone the smooth muscles of the lung surface tension from pleural fluid and negative pressure in the pleural cavity

surface tension from pleural fluid and negative pressure in the pleural cavity

Which of the following is a conducting zone structure? respiratory bronchiole alveolar sac alveolar duct terminal bronchiole

terminal bronchiole

Which muscles are activated during forced expiration? the diaphragm and internal intercostal muscles the internal intercostal, oblique, and transversus muscles the scalenes, sternocleidomastoid, and pectoralis minor muscles

the internal intercostal, oblique, and transversus muscles

To produce the pressure gradient responsible for inspiration, thoracic volume must first increase in order to decrease intrapulmonary pressure relative to atmospheric pressure. True False

true