When the volume of the thoracic cavity increases and the air pressure in the alveoli decreases until it is lower than atmospheric pressure, this directly causes expiration inspiration hypoventilation hyperventilation
Added by Chase S.
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Step 1: When the volume of the thoracic cavity increases, the pressure inside the lungs decreases. Show more…
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During normal expiration the alveolar pressure (Select all that apply.) increases until the pressure in the alveoli equals that of the atmosphere drives the movement of air into the lungs decreases until the pressure in the alveoli equals that of the atmosphere is greater than the atmospheric pressure is less than the atmospheric pressure
Sulav P.
Madhur L.
Increasing thoracic volume moves air pressure in the lungs. As a result, air enters the lungs. When lungs are at rest, lung air pressure is the same as atmospheric pressure. Inspiration occurs when air pressure in the lungs is lower than the atmospheric pressure. Decreasing thoracic volume moves air pressure in the lungs. As a result, air leaves the lungs. During quiet inspiration, contraction of the diaphragm muscle lowers the floor of the thoracic cavity, which increases the air pressure in the lungs. During quiet expiration, the relaxation of the diaphragm muscle causes it to move upward, which decreases the thoracic volume.
Adi S.
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