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Physiology - Carbon dioxide transport in the blood Flashcards

1
Q

buffes, respiratory regulation and which other system defends H+ conc?

a. hepatic regulation
b. renal regulation
c. neurohormonal regulation

A

b.renal regulation

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2
Q

what are the 2 main buffers in the blood?

a. Hb and HCO3-
b. HCO3- and H2CO3
c. H2CO3 and Hb

A

c.H2CO3 and Hb

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3
Q

what is H2CO3 known as?

a. bicarbonate ion
b. carbonic acid

A

b.carbonic acid

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4
Q

what is normal blood pH?

a. 7.4
b. <7.35
c. >7.45
d. 7.5

A

a.7.4

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5
Q

what is acidosis blood pH?

a. 7.4
b. <7.35
c. >7.45
d. 7.5

A

b.<7.35

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6
Q

what is alkalosis blood pH?

a. 7.4
b. <7.35
c. >7.45
d. 7.5

A

c. >7.45

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7
Q

retention of which substance leads to respiratory acidosis?

a. bicarbonate ion
c. CO2
d. carbonic acid

A

d.carbonic acid

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8
Q

what does respiratory acidosis increase?

a. pco2
b. po2
c. phco3-

A

a.pco2

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9
Q

increased non carbonic acids leads to which type of acidosis/

a. metabolic
b. resp

A

a.metabolic

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10
Q

concentrations of which substances decrease in metabolic acidosis?

a. co2 and h2co3
b. co2 and hco3-
c. h2o and co2

A

b.co2 and hco3-

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11
Q

carbonic anhydrase converts between which 2 substances?

a. h2co3 and hco3- and H+
b. co2 and h2o
c. h2co3, co2 and h2o

A

c.h2co3, co2 and h2o

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12
Q

where is most of co2 in the blood found?

a. red blood cells
b. plasma
c. white blood cells

A

b. plasma

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13
Q

most co2 is found as?

a. HCO3-
b. CO2 disolved
c. carbamino compounds

A

a.HCO3-

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14
Q

the ability of deoxyHb in veins to carry more CO2 than oxy Hb in arteries causing a shift left in the graph for venous blood is known as

a. fick principle
b. starling law
c. haldane effect
d. bohr effect

A

c. haldane effect

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15
Q

cardiac dioxide output = arterio-venous difference x cardiac output is known as?

a. starling law
b. haladane effect
c. bohr effect
d. fick principle

A

d.fick principle

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16
Q

what is cardiac output measured in?

a.l/second
bl/min
c.ml/min

17
Q

what is co2 in the fick principle measured in?

a,l/min

b. l/s
c. ml/l

18
Q

what is carbon dioxide measured in for the fick principle?

a. ml/min
b. l/min
c. ml/l

19
Q

how many ways is oxygen carried?

a.2
b3
c.4

20
Q

dissolved (3ml/l) or reacted with hae is the two ways which substance is carried

a. bicarbonate
b. carbon dioxide
c. oxygen
d. carbonic acid

21
Q

dissolved (30ml/l), reacted with globin and reacted with water are the 3 ways which substance is carried

a. bicarbonate
b. carbon dioxide
c. oxygen
d. carbonic acid

A

b.carbon dioxide

22
Q

how much oxygen is there carried in total per litre of blood?

a. 200ml/l
b. 3ml/l
c. 30 ml/l
d. 500 ml/l

23
Q

how much carbon dioxide is there carried in total per litre of blood?

a. 200ml/l
b. 3ml/l
c. 30 ml/l
d. 500 ml/l

A

d. 500 ml/l

24
Q

on which gases gas content/pp graph is there a plateau ?

a. oxygen
b. carbonic acid
c. carbon dioxide

25
Q

Which of these effects changes the oxygen carrying capacity of blood?

a. bohr
b. haldane

26
Q

how much pressure is needed to add 45ml/l of co2 at rest?

aa. 7kpa
b. 0.7kpa

27
Q

how much pressure is needed to extract 50ml/l of o2 at rest ?

a. 7kpa
b. 0.7kpa

28
Q

what is normal paco2?

a. 8.5
b. 4.0
c. 3.5
d. 5.4

29
Q

what is normal hco3-?

a. 27
b. 31
c. 25
d. 12

30
Q

what determines alkilosis /acidosis?

a.pH increase/decrease
b. paCO2 increase/decrease
c.bicarbonate increase
d,bicarbonate decrease
e. bicarbonate increase/decrease and resp compensation (paCO2 increase /decrease)

A

a.pH increase/decrease

31
Q

what determines resp alkilosis /acidosis?

a.pH increase/decrease
b. paCO2 increase/decrease
c.bicarbonate increase
d,bicarbonate decrease
e. bicarbonate increase/decrease and resp compensation (paCO2 increase /decrease)

A

b. paCO2 increase/decrease

32
Q

what determines if it is acute/chronic resp acidosis?

a.pH increase/decrease
b. paCO2 increase/decrease
c.bicarbonate increase
d,bicarbonate decrease
e. bicarbonate increase/decrease and resp compensation (paCO2 increase /decrease)

A

c.bicarbonate increase

33
Q

what determines if it is acute/chronic resp alkilosis?

a.pH increase/decrease
b. paCO2 increase/decrease
c.bicarbonate increase
d,bicarbonate decrease
e. bicarbonate increase/decrease and resp compensation (paCO2 increase /decrease)

A

d,bicarbonate decrease

34
Q

what determines if it is metabolic acidosis/alkalosis?

a.pH increase/decrease
b. paCO2 increase/decrease
c.bicarbonate increase
d,bicarbonate decrease
e. bicarbonate increase/decrease and resp compensation (paCO2 increase /decrease)

A

e. bicarbonate increase/decrease and resp compensation (paCO2 increase /decrease)

BCR 1 (60 decks)

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