BMS 300 Exam 4 Quizzes (Passed!)

Epithelial cells of the alveoli are covered by a layer of water that does what to surface tension? correct answers Increases Damage to the lower motor neurons of C3, C4 and C5 (Phrenic nerve) has what effect? correct answers Paralysis of the diaphram T or F: Elastic recoil of the lungs to their original volume is an active process correct answers False What is the function of Type I pneumocytes? correct answers Responsible for gas exchange that takes place in the aleveoli By decreasing surface tension, surfactant (detergent): correct answers increases lung compliance decreases lung elastic recoil When the shape of a curve is sigmoidal this indicates what? correct answers Cooperative binding Oxygen moves from the _____________ to the ________________, which is from high concentration to low concentration correct answers Alveoli, pulmonary capillaries The atmospheric pressure in Fort Collins is approximately 630 mmHg. You would expect the atmospheric pressure in Death Valley, which is below sea level, to be: correct answers greater than 630 mmHg The escape of carbon dioxide and resulting flatness of your beverage when opening a nice cold "soda" is an example of: correct answers Henry's Law T or F: With decreased carbon dioxide in the blood, the oxygen dissociation curve would shift to the left. correct answers True In tissues, CO2 will get converted into ___________ through carbonic anhydrase. In the lungs, the carbonic anhydrase coverts that into _____________ which then diffuses into the lungs. correct answers H+ and HCO3- H2O and CO2 While climbing a 14er, you realize that the urge to breathe has increased. What compound is responsible for driving a circuit to activate LMNs innervating the diaphragm? correct answers H+ Chemoreceptors in the periphery that monitor oxygen and carbon dioxide are located in: correct answers Aortic body Carotid body