Ch 29 and 30 - Transport of CO2 and O2 in the blood & Gas exchange in the lungs (2019) Evals by Keim Flashcards Preview

PHYSIOLOGY - 1st Year 1st Sem Comprehensive Exam > Ch 29 and 30 - Transport of CO2 and O2 in the blood & Gas exchange in the lungs (2019) Evals by Keim > Flashcards

Flashcards in Ch 29 and 30 - Transport of CO2 and O2 in the blood & Gas exchange in the lungs (2019) Evals by Keim Deck (30)
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1

Which of the ff does not describe the normal structure of adult Hemoglobin?

Metal ion in ferric state

2

Residue binds to ferrous and will stabilize the complex

Histidine

3

All heme devoid of oxygen each of the residue will pull the Fe2+ from above the plane by:

0;06 nm

4

Which of the following factors will shift the Hb-O2 dissociation curve to the left?

Decrease PCO2

5

CO2 increase, O2 decrease.

Haldane effect

6

True or False: Gas exchange more efficient at apex than base.

True

7

Increase diffusing capacity.

Exercise

8

Interstitial space with ECM:

D6

9

What happens at the end of the inspiration?

Lung surface maximizes the end of inspiration

10

Most amount of oxygen in the blood

Combined with hemoglobin in RBCs

11

Cl-HCO3 exchanger other names except:

Bicarbonate shift

12

Gas parameters except:

No exception

13

The blood carries total CO2 mainly as:

Bicarbonate

14

Venous PCO2

45 mmHg

15

Partial pressure of O2 in alveolar is normally lower because:

Oxygen requires a pressure gradient diffuse

16

Pulmonary concentration depends except:

Hemoglobin concentration

17

Number of oxygen molecules moving across the barrier

Flow

18

Diffusion limited:

CO2

19

Why CO does not reach equilibrium?

Hemoglobin that enters pulmonary capillary is already heavily preloaded.

20

The incremental CO2 passes through the following gas channels except:

Aquaporin II

21

Which is true?

Net flow is proportional to the area and INVERSELY PROPORTIONAL to thickness

22

Which form of CO2 follows Henry's law?

Dissolved CO2

23

Heme is oxidized.

Nonplanar to planar

24

Increase airway resistance:

COPD

25

Net flow is proportional to the concentration gradient.

Fick's law

26

Exchange of gases in the alveoli:

Simple diffusion

27

What other gases bind to the ferric state of hemoglobin aside from oxygen and snap it into the relax state?

All of the above

28

11% of incremental CO2 travels in the ff. except:

Carbonate

29

PCO2 rises slowly because:

CO flux is low

30

Very high partial pressure of oxygen except:

T state