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Asthma > Intro to the Respiratory System (SELF STUDY) > Flashcards

Intro to the Respiratory System (SELF STUDY) Flashcards

1
Q

Upper respiratory tract

A

nose, nasal cavity, pharynx, larynx

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2
Q

Nose

A

passageway for air

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3
Q

Nasal cavity

A

filters, warms and moistens air

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4
Q

Pharynx

A

passageway for respiration and digestive systems

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5
Q

Larynx

A

‘voice box’, maintains open airway, routes food and drink appropriately

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6
Q

Lower respiratory tract

A

trachea, bronchi, lungs

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7
Q

Trachea

A

conveys air from larynx, branches into bronchi from lungs

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8
Q

Bronchi

A

branching airways in the lungs

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9
Q

Lungs

A

contain alveoli which are responsible for gas exchange

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10
Q

Steps in respiration

A
  1. pulmonary ventilation
  2. pulmonary respiration
  3. tissue respiration
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11
Q

What is respiration dependent on?

A

volume, pressure, temperature, motion

gas laws

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12
Q

Boyle’s law

A

pressure is inversely proportional to volume at a constant temperature

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13
Q

Water vapour pressure

A

inspired air saturated with water vapour in upper airways, which ‘dilutes’ gases
at 37°C, pp of sat. WV pressure = 47mmHg = 6.3 kPa
relevance? enables efficient gas exchange

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14
Q

How to get from mmHg to kPa

A

divide by 7.5

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15
Q

Dalton’s law of partial pressure

A

pressure exerted by each gas in a mixture of gases is independent of other gases present

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16
Q

Pulmonary ventilation rate

A

respiration rate x tidal volume

17
Q

Alveolar ventilation rate

A

actual amount of air that reaches the alveoli
calculate ventilation of dead spaces
PVR - dead space ventilation rate

18
Q

Dead space type

A

serial
distributive
physiological

19
Q

Serial dead space

A

volume of conducting airways

20
Q

Distributive dead space

A

some parts of the lungs are not airways but do not support gas exchange (damages alveoli)

21
Q

Physiological dead space

A

serial + distributive

22
Q

Dead space ventilation rate

A

physiological dead space x respiration rate

Asthma (6 decks)

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