Choose the correct answer and explain why the other answers are incorrect 1. Negative intrathoracic pressure is maintained by all of the following EXCEPT (select the incorrect response) Elastic recoil of the chest wall Elastic recoil of the lungs Lubricant in the pleural space Air in the pleural space 2. The pathophysiologic characteristics of pulmonary fibrosis include Increased compliance Decreased compliance Bronchoconstriction Interstitial consolidation 3. Other causes of pulmonary fibrosis include Chronic bronchitis Obstructive sleep apnea Bronchiectasis Inhalation of inorganic dust
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Negative intrathoracic pressure is maintained by all of the following EXCEPT (select the incorrect response) - Elastic recoil of the chest wall: This helps maintain negative intrathoracic pressure by pulling the chest wall outward. - Elastic recoil of the lungs: Show more…
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In negative pressure filling, air moves into the lungs when a. the volume of the thoracic cavity increases. b. the pressure in the thoracic cavity decreases. c. air is forced down the trachea by muscular contractions of the mouth and pharynx. d. all of the above occur. e. only a and b occur.
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Fill up the blanks in the following paragraph by selecting the correct option. The movement of air into and out of the lungs is carried out by creating a (i) between the lungs and the atmosphere. Inspiration can occur if intra-pulmonary pressure is (ii) than the atmospheric pressure, Expiration takes place when the intra-pulmonary pressure is (iii) than the atmospheric pressure. Inspiration is initiated by the (iv) of diaphragm which (v) the volume of thoracic chamber in the antero-posterior axis. (i) (ii) (iii) (iv) (v) (a) Concentration less higher relaxation increases gradient (b) Concentration higher less contraction decreases gradient (c) Pressure higher less relaxation deqeases gradient (d) Pressure less higher contration increases gradient
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