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Pulmonary Phys Introduction Flashcards

(17 cards)

1
Q

Moves particles up respiratory tract towards mouth

A

mucous-ciliary elevator

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2
Q

Cigarrette smoking and mucous-ciliary elevator

A

smoking paralyzes mucous-ciliary elevator

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3
Q

Diffusion of gases in alvelar capillaries depends on

A

pressure

not concentration

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4
Q

of alveoli

A

500 million

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5
Q

Airway path

A

trachea → bronchi → lobar bronchi → segmental bronchi → terminal bronchioles → respiratory bronchioles

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6
Q

Conducting airway

A

trachea → bronchi → lobar bronchi → segmental bronchi → terminal bronchioles

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7
Q

Respiratory zone

A

respiratory bronchioles → alveolar ducts → alveoli

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8
Q

Air in conducting zone

moves via

A

convection

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9
Q

Air in respiratory zone

moves via

A

diffusion

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10
Q

Why is it signifigant that air doesn’t move via convention in respiratory zone?

A

that means that dust will settle where convection ends

ie terminal bronchioles

that means we can move dust up via mucous-ciliary elevator to be coughed up and expelled

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11
Q

Conducting airway volume

A

150 mL

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12
Q

Typical breah volume

A

500 mL

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13
Q

Compliance of lungs

A

500 mL/3 cm H2O

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14
Q

Low compliance leads to

A

rapid, shallow breathing

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15
Q

Bronchioles receive blood from

A

aorta ie systemic circulation

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16
Q

Inhaled particles are cleared via

A

nose: filtration

mucous-ciliary elevator: conducting airway

macrophages: alveoli

17
Q

Surface tension decreased using