transport of oxygen and the bohr shift

Cards (8)

transport of oxygen in capillaries
3% dissolved into plasma, 97% combines with haemoglobin to form oxyhaemoglobin
transport of oxygen in tissues
oxygen is released from oxyhaemoglobin to the tissues (oxyhaemoglobin dissociation )in the muscle, oxygen is stored by myoglobin, myoglobin has a higher affinity for oxygen and will store oxygen for the mitochondria to produce energy
high affinity vs low affinity
high - oxygen combines easily to haemoglobin but struggles to be released
low - oxygen struggles to bind but is easily released
high affinity vs low affinity shifts in curves
high - dissociation curve shifts left
low - dissociation curve shifts right
Explain the Bohr shift
during exercise the S shaped curve shifts to the right as the muscles require more oxygenThe dissociation of oxygen from haemoglobin to the muscle tissue occurs more readilythis is known as the Bohr shift
3 causes of Bohr shift
increase in blood temperature
increase in CO2
decrease in pH
explain why the curve shifts to right during exercise
as the muscles require more oxygenThe dissociation of oxygen from the haemoglobin to muscle tissue occurs more readily
during exercise what affinity is there
LOW(easily released)as theres inc in blood temp and C02 and decrease in PH