Respiratory System 10

Haldane Effect Is-

• Loading of CO2 to blood causes unloading of O2
• loading of O2 to blood causes unloading of CO2
• Binding of CO to Hb displaces O2
• Decrease in O2 affinity to Hb when pH falls

What is untrue about shift?

• Completes in one second
• content of Arterial blood is more than Venus
• content of Venus blood is more than Arterial
• Associated from diffusion of from plasma into red cells

Hematocrit f Venus blood is

• 3% greater than arterial blood
• 3 times greater than arterial blood
• 3% less than arterial blood
• 3 times less than arterial blood

The most important factor in transport of CO2 as HCO3 is

• affinity to Hb
• Basic nature of HCO3-
• Increased solubility of CO2
• carbonic anhydrase in RBC

O2affinity with Hb decreases in

• hypoxya
• hypothermia
• HbF
• Raised blood pH

If blood is exposed to pO2 500mm hg, what will happen?

• 5 fold increase in oxygen bound to haemoglobin
• 5 fold increase in dissolved oxygen
• Venus pO2 falls
• oxygen becomes toxic

H+ is more bound to

• De-oxygenated Hb
• Oxygenated Hb
• met-haemoglobin
• carbamino Hb

Chloride shift was described by?

• Hamburger
• Haldane
• Bohr
• Pristley

Myoglobin shifts Oxy Hb dissociation curve to

• Right
• Left

Oxygen saturation is

• Haemoglobin bound to oxygen : maximum amount of oxygen that can bound to haemoglobin
• Maximum amount of oxygen that can bound to haemoglobin : haemoglobin bound to oxygen
• Total amount of oxygen in unit volume of blood :
• Amount of oxygen taken by the tissues from the blood