Gas transport in Blood 2 (5)

Question 1

What are the means of CO2 transport in the blood?

Answer 1

1) solution (10%) - more than O2 because CO2 is more soluble
2) As bicarbonate (60%)
3) As carbamino compounds (30%)

Question 2

How is bicarbonate formed?

Answer 2

CO2 diffused into red blood cells and HCO3- is switched for Cl- and hydrogen ions are buffered by haemoglobin

Question 3

How are carbamino compounds formed?

Answer 3

The combination of CO2 with terminal amine groups in blood proteins

Question 4

What is the Haldane effect?

Answer 4

Removing O2 from Hb increasing the ability of Hb to pick up CO2 and CO2 generated H+

Question 5

What do the Bohr effect and the Haldane effect work in synchrony to facilitate?

Answer 5

O2 liberation and uptake of CO2 and CO2 generated H+ at tissues

Question 6

What facilitates the removal of O2 from haemoglobin at tissue level by shifting the O2- Hb dissociation curve to the right?

Answer 6

The Bohr effect

Question 7

How is CO2 liberated at the lungs?

Answer 7

The Hb pick-up the O2 and this weaken its ability to bind CO2 and H+

Question 8

What is henrys law?

Answer 8

The amount of a given gas dissolve in given type and volume of liquid at a constant temp, is proportional to the partial pressure of the gas in equilibrium with the liquid