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Respiratory System > Respiratory physiology 3 > Flashcards

Respiratory physiology 3 Flashcards

1
Q

ventelation ( broad term)

A

air in and out of lungs (breathing)

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2
Q

pulmonary ventilation

A

total air into and out of the lungs in l/min

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3
Q

alveolar ventilatoin

A

total air into and out of the alveoli in l/min

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4
Q

ammount of dead air space

A

150ml

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5
Q

what is the normal tidal volume rate of a person
A. normal
B. Anxious
C. very relaxed

A

A. 500
B . 300
C. 750

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6
Q

what is the normal breathing rate of a person
A. normal
B. Anxious
C. very relaxed

A

a. 12
b. 20
c.8

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7
Q

how to calculate total pulimatry ventailation

A

respiritory rate times ml

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8
Q

how to cacluare air intake to alveoli intake in ml

A

tidal - dead space

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9
Q

how to calcular alevolar venlation

A

air to alvevloi times respiratory rate

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10
Q

hypo ventilatoin

A

low aveloar respiartion, as a ressult of rapid breathing with small tidal volume

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11
Q

hyper ventilation

A

high aveloar rate, resultof large tidal volume and low respiratory rate

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12
Q

partial pressure

A

the pressure of a given gas taken from a larger volume of gases e.g. only oxgyen pressure from air pressure

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13
Q

what is normal alvelolar partial pressure of p02

A

100

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14
Q

what is normal aveloar pressure of pc02

A

40

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15
Q

normal pressure for p02 and pco2 during hyperventalation

A

p02, 120
pc02 20

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16
Q

normal pressure for p02 and pco2 during hypoventalation

A

po2, 30, pco2 100

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17
Q

is compliance lower at base or apex of the lungs and why

A

apex, due to the lungs being more inflated at function residual capacity (expiratory reserve volume + residual volume)

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18
Q

what artery supplie the lungs with blood with oxygenated blood for its survival

A

bronchial artery

19
Q

what is the pressure of blood in the lungs and what is it in the rest of the systematic circulation

A

25/10 mmhg
120/80mmhg

20
Q

What is ht pressure of the co2 and o2 in the alveoi

A

po2, 100
pco2 40

21
Q

what is th prsessur of the pc02 an po2 when it has passed the tissues

A

pco2 - 46
p02 40

22
Q

what is the pressure of the pco2 and p02 in the cell

A

p02 -40
pco2 4
6

23
Q

What are teh abreavation A, a and ṽ

A

A = aveoli
a = arterial blood
ṽ = venous blood

24
Q

whydoes co2 dissolve ascoss teh membrane much quicker than 02

A

it is water soluble

25
Q

what factors of diffusion do pathogens affect

A

decrease surface area
increase thickens of membraen

26
Q

what effect does emphysema have on alveoli

A

damages them ruducing their surface area

27
Q

what effect does fibrotic lung dises have on aveloii

A

thickens teh aveloar memabrne and thus slows gas exchange
it has loses lungs compliance due to it being as thick as possible

28
Q

what effect do pulmonary edma have on diffusion of air

A

increased intersiton fluid space resulting in further for it to travel

29
Q

what effect does hastma hav on airway resitant

A

decraes as the bronchoise are restived

30
Q

obstuctive lung disase

A

restic flow of airways

31
Q

restictive lung disase

A

restict lung expansion

32
Q

Examples of obstuctive lung disase

A

Astma,
COPD, - Chronic bronchitis and Emphysema

33
Q

Examples of resticitive lung disorder

A

Fibrosis
INfaft respitory distress syndrom ( insufficanet surfactant production)
oedema
pnemothorax

34
Q

when is obsucive and restive lung disorder most common inspiration or exspiration

A

obstuctoine, - expiration
restivitive - insiration

35
Q

What is static spiromety and dynamic spiromety

A

static - only consider total ammount expired
dynamic - ammout expireated and time taken to expire amount

36
Q

What lung volumes can be measued by sprimenty

A

all but ones taht involve residualr volume

37
Q

What is fev

A

forced expiratory volume in 1 second

38
Q

what is fvc

A

forced viral captiace

39
Q

what is normal fev /fvc

A

80%

40
Q

What percenatge do obstuctive disease normally have

A

40%

41
Q

do resticted disease often haev a lower fev/ fvc

A

no , normally about 80-90%

42
Q

What factors are required for the higher pressure needed during inspiration compared to expiration

A

lung interia, surface tension , comression of airways during epriration requires more pressure for air to flow along them

43
Q

effect of emphyseam on pressue volume relationhsip

A

loss of elastic tissue meas expirati requires signifcanly extra work

44
Q

effect of fibrois on prexssur volume relationshi

A

fibrous tissue means effort of inspiration is increased

Respiratory System (28 decks)

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