Approximately seventy percent of carbon - dioxide absorbed by the blood will be transported to the lungs :
as bicarbonate ions
in the form of dissolved gas molecules
by binding to R.B.C
as carbamino - haemoglobin
As we discussed in concepts
O2 can bind with haemoglobin in a reversible manner to form oxyhaemoglobin.
Each haemoglobin molecule can carry a maximum of four molecules of O2. Binding of oxygen with haemoglobin is primarily related to partial pressure of O2.
Carboxyhaemoglobin (symbol COHb or HbCO) is a stable complex of carbon monoxide and haemoglobin (Hb) that forms in red blood cells upon contact with carbon monoxide (CO).
This condition is fatal.
70% O2 Transported through bicarbonate form (HCO3-)
25% O2 through carbomine Hb form
5% O2 in dissolved form
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