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SLP 302 > Chapter 3 > Flashcards

Chapter 3 Flashcards

1
Q

What 2 factors drive passive expiration?

A

Elasticity, gravity

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2
Q

Using muscular effort to push expiration farther

A

Active expiration

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3
Q

Device used to measure respiratory volume

A

Spirometer

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4
Q

Device used to measure air pressure differences

A

Manometer

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5
Q

What are the 4 stages of gas exchange?

A

Ventilation, distribution, perfusion, diffusion

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6
Q

Actual movement of air in the conducting respiratory pathway, air inhaled per unit time

A

Ventilation

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7
Q

Refers to the migration of gas or liquid through a barrier

A

Perfusion

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8
Q

Actual gas exchange across the alveolar capillary membrane

A

Diffusion

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9
Q

How many cycles does the average adult go through during quiet respiration?

A

12-18

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10
Q

What is considered 1 cycle of respiration?

A

1 inhalation, 1 exhalation

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11
Q

Volume of air exchanged by an organism in 1 minute

A

Minute volume

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12
Q

Combinations of volumes that express physiological limits

A

Capacities

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13
Q

Volume of air that can be inhaled after a tidal inspiration

A

IRV

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14
Q

Volume of air that can be expired following passive, tidal expiration

A

ERV

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15
Q

Volume of air remaining in the lungs after a maximum exhalation

A

RV

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16
Q

Volume of air within the conducting passageways that cannot be involved in gas exchange

A

Dead air

17
Q

Volume of air that can be inhaled during a maximal exhalation

A

Vital capacity

18
Q

How do you find vital capacity?

A

IRV + ERV + TV

19
Q

Volume of air in the body at the end of passive exhalation

A

Functional residual capacity (FRC)

20
Q

How do you find FRC?

A

ERV + RV

21
Q

Maximum inspiratory volume possible after tidal expiration

A

Inspiratory capacity (IC)

22
Q

How do you find IC?

A

TV + IRV

23
Q

Sum of IRV, TV, ERV, and FRC

A

Total lung capacity

24
Q

Change in volume (liters) divided by the change in pressure (cm H20)

A

Compliance

25
Q

Air pressure measured within the mouth

A

Intraoral/ mouth pressure

26
Q

Pressure below the vocal folds

A

Subglottal pressure

27
Q

Air pressure measured at the levels of the alveolus in the lungs

A

Alveolar pressure

28
Q

Pressure within the space between parietal and visceral pressure

A

Pleural pressure

29
Q

What pressures are roughly equivalent when the vocal folds are open?

A

Oral, subglottal, alveolar

30
Q

Pressure that stays constantly negative and increases in negativity during inspiration

A

Intrapleural

SLP 302 (34 decks)

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