1. Blank occurs as the diaphragm relaxes, causing Blank in the volume of the lungs.target 1 of 3target 2 of 3 2. The pressure of the air in the lungs Blank, and air flows out of the lungs.
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Step 1: When the diaphragm relaxes, it moves upward, which causes a decrease in the volume of the lungs. Show more…
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QUESTION 18 Fill in the blanks with the correct words: During inspiration, intra-alveolar pressure is less than atmospheric pressure. The tidal volume is equal to the amount of fresh air that reaches the alveoli plus the dead space volume. The intra-alveolar pressure when the diaphragm contracts is greater than the intra-alveolar pressure when the diaphragm relaxes. The partial pressure of carbon dioxide in the blood leaving the lungs via the pulmonary vein is equal to the partial pressure of carbon dioxide in the alveolar air. At normal partial pressures in the capillaries, the percent of carbon dioxide in the blood that is bound to hemoglobin is the percent of oxygen in the blood that is bound to hemoglobin. QUESTION 19 Choose the correct answer to complete the statement: Air moves out of the lungs because: the gas pressure in the lungs is less than outside pressure. Intrathoracic pressure increases during expiration. the thorax is muscular. contraction of the diaphragm increases the volume of the pleural cavity. All of the above answers are correct.
Sri K.
As the lungs recoil, alveolar pressure ________ and air moves ________ the lungs. Question 26 options: increases : into increases : out of does not change : neither into nor out of decreases : into decreases : out of
Bryan V.
Drag a word or phrase into the blank in a sentence to make it correct: Increasing thoracic volume air pressure in the lungs. As a result, air moves the lungs. the same as diaphragm When lungs are at rest, lung air pressure is atmospheric pressure higher than into Inspiration occurs when air pressure in the lungs is the atmospheric pressure. increases Decreasing thoracic volume air pressure in the lungs. As a result, air moves the lungs. contraction external intercostal During quiet inspiration, contraction of muscle lowers the floor of the thoracic cavity, which air pressure in the lungs. lower than During quiet inspiration, of muscles lifts the ribs upward and outward, which thoracic volume. out of relaxation During quiet expiration, the of causes this muscle to move upward, which thoracic volume. decreases Reset Next
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