Resp (1) Flashcards

1
Q

How many lobes does the left lung have

A

2

Superior / inferior

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2
Q

What fissure is present in the left lung

A

Oblique fissure

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3
Q

Which lung is larger

A

Right

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4
Q

What is the carina

A

Structure that seperates the two bronchi

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5
Q

Thoracic Inlet is found where

A

Superior end of ribs

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6
Q

Thoracic Outlet is found where

A

Inferior end of ribs closed off by diaphragm

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7
Q

at the 2nd intercoastal , what can be found

A

Pulmonary valves

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8
Q

at the 5th intercoastal rip, what can be found

A

apex of heart

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9
Q

Phrenic nerves originate fromn where

A

C3/4/5

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10
Q

Superior / Anterior movement of sternum is done by what

A

Upper ribs

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11
Q

What does the upper ribs increase?

A

Antereoposterior diameter

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12
Q

what causes the elavation of the lateral shaft of ribs?

A

Lower ribs

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13
Q

What is increased by the lower ribs

A

Transverse diameter

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14
Q

What does the pleura do in terms of pressure

A

Increases the negative intrapleural space pressure

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15
Q

What are the 4 divisions of the parietal pleura

A

Cervical

Coastal

Diaphragmatic

Mediastinal

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16
Q

give an example of an intrinisic restrictive respriatory disease

A

Pulmonary fibrosis

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17
Q

give an example of an extrinisic restrictive respiratory disease

A

Pneumothorax

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18
Q

What happens to intrapleural pressure during inspiration

A

increase

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19
Q

What happens to incrapleural pressure during expiration

A

Decrease

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20
Q

During harder breathing in expiration, what contracts

A

Internal intercoastal muscles + abdominal muscles

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21
Q

Expiratory Reserve Volume consists of what

A

Large of a volume exhaled as deeply as possible

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22
Q

what prevents complete emptying of the lungs

A

Rigid thorax + pleural attachements of lungs

23
Q

Vital capacity includes what 3 things

A

Tidal Volume (TV)

Inspiratory Reserve Volume (IRV)

Expriatory Reserve Volume (ERV)

24
Q

functional residual capacity consists of what?

What is it dependent on?

A

ERV + RV

Compliance of lungs

25
Compliance is not what throughout the lung
Equal
26
to measure pressure of lung what is used
Oesophageal balloon
27
2 Reduced compliance diseases
Kyphoscoliosis Circumferential Burn
28
Increased compliance disease
Emphysema
29
Closing capacity
Volume of luings if bronchioles + alveoli collapse
30
Closing capacity equation
Closing volume + residual volume
31
Law of laplace
P = 2T / R
32
How is surface tension decreased
Forming a sphere
33
Hysteresis
Lung volume during inhalation is less than lung volume during expiration
34
Causes of hysteresis
Reduced compliance
35
if FEV1/FVC = <0.7
obstructive
36
Work =
Volume x pressure
37
How is work reduced in restrictive diseases
rapid small volume breaths
38
How is work reduced in obstructive diseases
Large volume breaths
39
What does humifidication of oxygen do
decreases partial pressure of O2
40
increasing solubility of a fluid does what to partial pressure of a gas
Decreases
41
typical ventilation L/min
5.5
42
Which part of the alveoli is the largest
Apical
43
Which part of the alveoli can expand the most and has better ventilation
Basal
44
Bronchial artery stems from what
Thoracic aorta
45
At the zone 1 of alveolar dead space, what happens in terms of ventilation and perfusion
Good ventilation but no perfusion
46
At zone 2 of the Recruitment zone, what happens to the PP of gases
Higher P(arterial pressure) due to higher hydrostatic pressure
47
Blood flow is determined by what in zone 2
Difference in P(arterial) + P(Alveoli)
48
the distention zone is found where
Base of lung
49
Blood flow is determined by what in zone 3
P(arterial) + P(venous)
50
V/Q of apex of lung V/Q of base of lung
3. 3 | 0. 6
51
Physiological dead space consists of (2)
Anatomical dead space + Alveolar dead space
52
Anatomical dead space includes (2)
Mouth + trachea anything not involved in gas exchange
53
V/Q of shunt
Low
54
Shunts can occurs from what
Pneumothorax Bronchial veins