Respiratory physiology 3

Question 1

ventelation ( broad term)

Answer 1

air in and out of lungs (breathing)

Question 2

pulmonary ventilation

Answer 2

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

Question 3

alveolar ventilatoin

Answer 3

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

Question 4

ammount of dead air space

Answer 4

150ml

Question 5

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

Answer 5

A. 500
B . 300
C. 750

Question 6

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

Answer 6

a. 12
b. 20
c.8

Question 7

how to calculate total pulimatry ventailation

Answer 7

respiritory rate times ml

Question 8

how to cacluare air intake to alveoli intake in ml

Answer 8

tidal - dead space

Question 9

how to calcular alevolar venlation

Answer 9

air to alvevloi times respiratory rate

Question 10

hypo ventilatoin

Answer 10

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

Question 11

hyper ventilation

Answer 11

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

Question 12

partial pressure

Answer 12

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

Question 13

what is normal alvelolar partial pressure of p02

Answer 13

100

Question 14

what is normal aveloar pressure of pc02

Answer 14

40

Question 15

normal pressure for p02 and pco2 during hyperventalation

Answer 15

p02, 120
pc02 20

Question 16

normal pressure for p02 and pco2 during hypoventalation

Answer 16

po2, 30, pco2 100

Question 17

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

Answer 17

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

Question 18

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

Answer 18

bronchial artery

Question 19

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

Answer 19

25/10 mmhg
120/80mmhg

Question 20

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

Answer 20

po2, 100
pco2 40

Question 21

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

Answer 21

pco2 - 46
p02 40

Question 22

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

Answer 22

p02 -40
pco2 4
6

Question 23

What are teh abreavation A, a and ṽ

Answer 23

A = aveoli
a = arterial blood
ṽ = venous blood

Question 24

whydoes co2 dissolve ascoss teh membrane much quicker than 02

Answer 24

it is water soluble

Question 25

what factors of diffusion do pathogens affect

Answer 25

decrease surface area increase thickens of membraen

Question 26

what effect does emphysema have on alveoli

Answer 26

damages them ruducing their surface area

Question 27

what effect does fibrotic lung dises have on aveloii

Answer 27

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

Question 28

what effect do pulmonary edma have on diffusion of air

Answer 28

increased intersiton fluid space resulting in further for it to travel

Question 29

what effect does hastma hav on airway resitant

Answer 29

decraes as the bronchoise are restived

Question 30

obstuctive lung disase

Answer 30

restic flow of airways

Question 31

restictive lung disase

Answer 31

restict lung expansion

Question 32

Examples of obstuctive lung disase

Answer 32

Astma, COPD, - Chronic bronchitis and Emphysema

Question 33

Examples of resticitive lung disorder

Answer 33

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

Question 34

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

Answer 34

obstuctoine, - expiration restivitive - insiration

Question 35

What is static spiromety and dynamic spiromety

Answer 35

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

Question 36

What lung volumes can be measued by sprimenty

Answer 36

all but ones taht involve residualr volume

Question 37

What is fev

Answer 37

forced expiratory volume in 1 second

Question 38

what is fvc

Answer 38

forced viral captiace

Question 39

what is normal fev /fvc

Answer 39

80%

Question 40

What percenatge do obstuctive disease normally have

Answer 40

40%

Question 41

do resticted disease often haev a lower fev/ fvc

Answer 41

no , normally about 80-90%

Question 42

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

Answer 42

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

Question 43

effect of emphyseam on pressue volume relationhsip

Answer 43

loss of elastic tissue meas expirati requires signifcanly extra work

Question 44

effect of fibrois on prexssur volume relationshi

Answer 44

fibrous tissue means effort of inspiration is increased