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Physiology Exam V > Respiratory > Flashcards

Respiratory Flashcards

1
Q

Muscles of inspiration

A

diahgram, external intercostal, scalene and SCM

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2
Q

Muscles of expiration

A

supposed to be passive, but if needed abdominal muscles and internal intercostals

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3
Q

Forces vital capacity (FVC)

A

total volume of air that can be forcibly expired after max insipiration

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4
Q

FEV1 (forced expiratory volume)

A

volume of air that can be forcibly expired in 1 second

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5
Q

What decreases FEV1/FVC

A

obstructive disease

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6
Q

What makes FEV1/FVC increase or stay the same

A

restrictive disease

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7
Q

FVC, and FEV1 in obstructive disease

A

both are decreased by FEV1 is decreased more

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8
Q

FVC, and FEV1 in restrictive disease

A

both decreased by FVC more decreased

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9
Q

normal flow volume curve

A

inspiration constant on lower portion of curve, upper portion shows peak expiratory flow at FEV1 then steady decrease in flow rate

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10
Q

obstructive flow volume curve

A

whale
all volumes are higher
inspiration normal but PEF decreased due to increased resistance

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11
Q

restrictive flow volume curve

A

similar shape to normal but all volumes are decreased

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12
Q

upper airway obstructive curve

A

peaks are absent

plateaus at inspiration and expiration

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13
Q

Asthma

A

affects airway wall

reversible, little sputum, little alveolar damage

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14
Q

chronic bronchitis

A

affect airway wall

moderalty reversible, excess sputum, moderate alveolar damage

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15
Q

emphysema

A

affect perenchyma

nonreversible, little sputum, excess alveolar damage

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16
Q

How does chronic asthma affect V/Q relation

A

decreases

17
Q

what structural changes does chronic asthma causes

A

smooth muscle hypertrophy and hyperlasia
angiogensis
mucus cell hyperplasia
airway wall thickness

18
Q

How can you block smooth muscle contraction

A

b2-agonists

M3 antagonist

19
Q

what are key pulmonary function test abnormalities in obstructive lung disorders

A

decreased vital cap with overall decreased flow rate
decreased peak expiratory flow rate
decreased FEV1/FVC
decreased V/Q

Physiology Exam V (14 decks)

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