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Physiology > B7 L6 > Flashcards

B7 L6 Flashcards

1
Q

Conducting Zone

A

Nose, sinus, larynx, trachea, bronchi, bronchioles, terminal bronchioles
conditions air before it reaches lungs

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2
Q

Respiratory Unit

A

respiratory bronchioles, alveolar ducts, alveoli

where gas exchange occurs

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3
Q

M3 Receptors

A

parasympathetic

constrict bronchioles

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4
Q

B2 Receptors

A

sympathetic

dilate bronchioles

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5
Q

Alveoli

A

site of gas exchange
thin walled, elastic, large SA
surrounded by pulmonary capillaries

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6
Q

Surfactant

A

lines alveoli

made by Type 2 epithelial cells

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7
Q

Interstitium

A

everything not the respiratory tree

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8
Q

Small alveoli =

A

large interstitium

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9
Q

Large alveoli =

A

smaller interstitium

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10
Q

Visceral Pleura

A

against lung

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11
Q

Parietal Pleura

A

against chest wall

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12
Q

Interpleural Space

A

filled with fluid

keeps lungs inflated by keeping them attached to chest wall

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13
Q

Pressure in Interpleural Space is…..

A

Negative

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14
Q

Tidal Volume

TV

A

air moved during normal breathing

500mls (.5L)

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15
Q

Inspiratory Reserve Volume

IRV

A

max inhalation above TV

2000mls (2L)

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16
Q

Expiratory Reserve Volume

ERV

A

max exhalation below TV

1000mls (1L)

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17
Q

Residual Volume

RV

A

volume left after full exhalation

1300mls (1.3L)

18
Q

Vital Capacity

VC

A

volume that can be inhaled and exhaled

ERV + TV + IRV = 3500mls (3.5L)

19
Q

Inspiratory Capacity

IC

A

Volume of full inhalation after quiet exhalation

IRV + TV = 2500mls (2.5L)

20
Q

Functional Residual Capacity

FRC

A

volume in lung after quiet exhalation

ERV + RV = 2300mls (2.3L)

21
Q

Total Lung Capacity

TLC

A

total lung volume

IC + FRC = 4800mls (4.8L)

22
Q

Local Control

A

based on oxygen content of alveoli

keeps blood from non-ventilated alveoli

23
Q

Alpha 1

A

SNS

constricts arterioles

24
Q

Dead Space

A

volume of air not involved in gas exchange

25
Q

Anatomic Dead Space

A

set volume from conducting zone

150mls

26
Q

Physiologic Dead Space

A

Ventilated alveoli not involved in gas exchange

due to anatomic dead space and ventilated alveoli with no blood supply

27
Q

FEV1

A

forced expiratory volume in one second

28
Q

Forced Vital Capacity

A

Total volume forcefully exhaled after a full inspiration

29
Q

FEV1/ FVC

A

ratio measures lung function

80% or .8

30
Q

P

A

pressure of gas in an area

31
Q

V (with dot on top)

A

Gas Flow

32
Q

I

A

Inspired Air

33
Q

E

A

Expired Air

34
Q

Q

A

Blood Flow

35
Q

A

A

Alveolar Air

36
Q

a

A

dissolved arterial blood

37
Q

V (Location)

A

dissolved in venous blood

38
Q

PaO2

A

partial pressure of oxygen dissolved in arterial blood

39
Q

PAO2

A

partial pressure of oxygen in alveolar air

40
Q

PVO2

A

partial pressure of oxygen in venous blood

Physiology (17 decks)

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