15 terms

transport of gases, oxyhemoglobin dissociation curve

transport of gases
02 and co2 transported in blood
02 transport
systemic arteries, plasma and Hb
oxy-Hb hb with 02 bound to it
deoxy-Hb hb wihout 02 bound to it
Hb binds
o2 at lungs, pulmonary capillaries.
Hb release
02 at tissue and systemic capillaries
affinity between hb and o2
varies, po2 changes the affinity of the Hb and o2 (strength of attraction)
high po2
high affinity Hb binds o2
low po2
low affinity hb releases o2
oxyhemoglobin dissociation curve
high saturation = high afinity and low saturation=low affinity
systemic arteries
98-99% saturated, high affinity
systemic veins
75% saturated lower affinity
systemic arteries
20 ml 02/ 100 ml blood.
very little o2 is dissolved 1-2%
hemoglobin (Hb)
98-99% of 02 is bound to it