Ventilation vs. Respiration Flashcards

1
Q

Ventilation

A

(VE) The movement of air into and from the lung by the process of bulk flow

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2
Q

Bulk Flow

A

The movement of molecules along a passageway due to the pressure difference between the two ends

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3
Q

Formula for Ventilation

A

VE (L/min)= frequency (br/min) x tidal volume (L)

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4
Q

Expected Values at Rest

A

VE (L/min)= 12 (br/min) x 0.5 (L) = 6.0 L/min

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5
Q

Expected Values at Maximal Exercise

A

VE (L/min)= 60 (br/min) x 3.0 (L) = 180 L/min

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6
Q

Pulmonary Ventilation

A

The amount of air moved in or out of the lungs per minute

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7
Q

Pulmonary Ventilation Formula

A

VE= VT x f

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8
Q

Tidal Volume (VT)

A

Amount of air moved per breath

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9
Q

Breathing Frequency (f)

A

Number of breaths per minute

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10
Q

Alveolar Ventilation

A

The volume of fresh air that reaches the respiratory zone with each breath

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11
Q

External Respiration

A

Pulmonary; Exchange of CO2 for O2 at the lungs

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12
Q

Internal Respiration

A

Cellular; Exchange of O2 for CO2 that was produced by the tissues

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13
Q

Bronchial Tree Conducting Zone

A

Structures that air passes through to reach the respiratory zone; Humidifies, warms, and filter the air (warming of air occurs to prevent lung tissue from drying out during exercise when breathing is increased; (Trachea, Bronchial Tree, Bronchioles)

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14
Q

Bronchial Tree Respiratory Zone

A

The region of the lung where gas exchange occurs; Large number of alveoli provide a large surface area for diffusion
(respiratory bronchioles (which contain small clusters of alveoli), Alveolar Ducts, and Alveolar Sacs (Surfactant))

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15
Q

Surfactant

A

Phospholipoprotein molecule, secreted by specialized cells of the lung that lines the surface of alveoli and respiratory bronchioles; Lowers the surface tension of the alveoli membranes, preventing the collapse of alveoli during exhalation and increasing compliance during inspiration

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