Respiratory System Physiology Flashcards

1
Q

Intrapleural (Pleural) Pressure

A

Pressure in the potential space between the visceral and parietal pleura
Negative at rest
Determined by interaction between lungs and chest wall

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2
Q

Intrapulmonary (Alveolar) Pressure

A

Pressure measured in the lungs/alveoli
Equals atmospheric pressure at rest
Determined by changes in lung volume

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3
Q

Transpulmonary Pressure

A

Difference between Alveolar and Pulmonary pressure
(Pa - Ppl)
Determines lung volume

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4
Q

Total Lung Capacity

A

The volume of air contained in the lungs at maximal inspiration

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5
Q

Tidal Volume

A

The volume of air that moves in and out with each breath

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6
Q

Vital Capacity

A

The volume of exhaled air

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7
Q

Residual Volume

A

The air remaining in the lungs after a complete and forceful expiration

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8
Q

Functional Residual Capacity

A

Combination of the expiratory reserve volume PLUS residual volume; The volume at which the elastic recoil forces of the lungs and chest wall balance out

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9
Q

Obstructive diseases increase ____ ?

A

RV

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10
Q

Restrictive diseases decrease ____?

A

TLC

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11
Q
A
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