Old - Transport of O2 and CO2 ; Gas exchange

Question 1

The total uptake of a substance with peripheral tissues is equal to the product of the blood flow to the oxygen concentration in plasma is:

Answer 1

Fick principle

Question 2

The ff. characteristics with a normal adult hgb is EXCEPT:

Answer 2

it consists of an alpha chain and gamma chain

Question 3

The amino acid residue that binds with the ferrous state and donates negative charge…. oxygen complex:

Answer 3

histidine

Question 4

What happens to the heme portion of hemoglobin when they decrease the volume of oxygen?

Answer 4

Heme portion will have a dome-like conformation

Question 5

When partial pressure of oxygen is very high, it means:

Answer 5

All hgb molecules are in their relax state and have a high oxygen

Question 6

Which of the ff is/are true of hgb saturation?

Answer 6

All of the above

Question 7

When ___ Oxygen molecules that is bound to hgb is 100% saturated:

Answer 7

4 oxygen molecules

Question 8

The hgb-o2 dissociation curve that has a sigmoidal curve because of the cooperativity of the 4 oxygen binding sites in the hemoglobin molecule:

Answer 8

True

Question 9

Lungs at sea level pO2 of 100 mmHg:

Answer 9

Hemoglobin 98% saturated

Question 10

The ff factors shows a shift of hgb-o2 dissociation curve to the right except:

Answer 10

None of the above

Question 11

Which among the following consequence of the total co2 in the blood follows Henry’s law:

Answer 11

Dissolved CO2

Question 12

Which among the ff consequence of total co2 in the blood is not quantitatively important:

Answer 12

Carbonate

Question 13

About … % of incremental co2 enters the rbc thru the following gas channels except:

Answer 13

(sounds like atp2 channel)

Question 14

The carriage of total co2 in the blood depends on the following gas parameters except:

Answer 14

None of the above

Question 15

Which property of gas contribute to the diffusing lung capacity:

Answer 15

Both a and b (solubility in water and molecular weight)

Question 16

Which law state that diffusion is inversely proportional to the molecular weight:

Answer 16

Gas (?) law (sounds like gas-hindi ko ma remember)

Question 17

Poorly soluble gases, diffuses poorly across the other wall. The following are example of poorly soluble gases except:

Answer 17

CO2

Question 18

Thickness are properties of the barrier that contribute to the diffusing lung capacity. Which of the ff is/are true:

Answer 18

Both A and B

Question 19

Interstitial phase step containing the ECM step

Answer 19

D6

Question 20

The following statements are.. Diffusion are true except:

Answer 20

The flow of CO to alveolus to the RBC is so fast.

Question 21

The most common way in determining the diffusing capacity of CO:

Answer 21

Single-breath method

Question 22

The method in which the subject initially makes a max. Expiratory maximal volume and …. 10 seconds:

Answer 22

Single-breath method

Question 23

Which of the following factors Affects the decreasing capacity of the co is true:

Answer 23

Exercise

Question 24

If the gas in the capillary comes into equilibrium with the gas in the alveolar air by the end:

Answer 24

Perfusion limited

Question 25

Which of the ff does not bind with hgb:

Answer 25

NO

Question 26

CO gas uptake is considered to be

Answer 26

Diffusion limited

Question 27

NO uptake is:

Answer 27

Perfusion limited

Question 28

The ff pathological processes are accompanied by an increase in lung capacity except:

Answer 28

NOTA

Question 29

Surface area of the respiratory membrane is is one factor that can affect the rate of gas … which of the following statements are true:

Answer 29

All of the above