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

Question 1

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

Answer 1

Metal ion in ferric state

Question 2

Residue binds to ferrous and will stabilize the complex

Answer 2

Histidine

Question 3

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

Answer 3

0;06 nm

Question 4

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

Answer 4

Decrease PCO2

Question 5

CO2 increase, O2 decrease.

Answer 5

Haldane effect

Question 6

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

Answer 6

True

Question 7

Increase diffusing capacity.

Answer 7

Exercise

Question 8

Interstitial space with ECM:

Answer 8

D6

Question 9

What happens at the end of the inspiration?

Answer 9

Lung surface maximizes the end of inspiration

Question 10

Most amount of oxygen in the blood

Answer 10

Combined with hemoglobin in RBCs

Question 11

Cl-HCO3 exchanger other names except:

Answer 11

Bicarbonate shift

Question 12

Gas parameters except:

Answer 12

No exception

Question 13

The blood carries total CO2 mainly as:

Answer 13

Bicarbonate

Question 14

Venous PCO2

Answer 14

45 mmHg

Question 15

Partial pressure of O2 in alveolar is normally lower because:

Answer 15

Oxygen requires a pressure gradient diffuse

Question 16

Pulmonary concentration depends except:

Answer 16

Hemoglobin concentration

Question 17

Number of oxygen molecules moving across the barrier

Answer 17

Flow

Question 18

Diffusion limited:

Answer 18

CO2

Question 19

Why CO does not reach equilibrium?

Answer 19

Hemoglobin that enters pulmonary capillary is already heavily preloaded.

Question 20

The incremental CO2 passes through the following gas channels except:

Answer 20

Aquaporin II

Question 21

Which is true?

Answer 21

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

Question 22

Which form of CO2 follows Henry’s law?

Answer 22

Dissolved CO2

Question 23

Heme is oxidized.

Answer 23

Nonplanar to planar

Question 24

Increase airway resistance:

Answer 24

COPD

Question 25

Net flow is proportional to the concentration gradient.

Answer 25

Fick’s law

Question 26

Exchange of gases in the alveoli:

Answer 26

Simple diffusion

Question 27

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

Answer 27

All of the above

Question 28

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

Answer 28

Carbonate

Question 29

PCO2 rises slowly because:

Answer 29

CO flux is low

Question 30

Very high partial pressure of oxygen except:

Answer 30

T state