Discuss the transport of gases (O2 and co2 ) in blood
Dear Student,
The medium of transport for O2 and CO2 is blood.
About 97percent of O2 is transported by RBCs in the blood and the remaining 3 percent is carried in a dissolved state through the plasma.
Hemoglobin is a red colored iron-containing pigment present in the RBCs. O2 can bind with hemoglobin in a reversible manner to form oxyhemoglobin. Each hemoglobin molecule can carry a maximum of 4 molecules of O2 .
The partial pressure of O2 and Co2 , hydrogen ion concentration and temperature are the factors which interfere with this binding.
In the alveoli, where there is high pO2 , low pCO2 , Lesser H+ concentration, and low temperature, the factors are all favourable for the formation of oxyhemoglobin. Whereas in the tissues where there is low pO2 , high pCO2 , high H+ concentration, and higher temperature exists, the conditions are favorable for dissociation of oxygen from the oxyhemoglobin. This clearly indicates that O2 gets bound at the surface and gets dissociated at the tissues.
Nearly 20-25 percent of CO2 is transported by hemoglobin as carbamino-hemoglobin. Nearly 70 percent of CO2 is carried as bicarbonate with the help of enzyme carbonic anhydrase. About 7 percent of CO2 is carried in a dissolved state through plasma .
In the tissues where pCO 2 is high, it gets bounds to the blood whereas, in the alveoli where pCO 2 is low and pO 2 is high, it gets removed from the blood.
Regards.
The medium of transport for O2 and CO2 is blood.
About 97percent of O2 is transported by RBCs in the blood and the remaining 3 percent is carried in a dissolved state through the plasma.
Hemoglobin is a red colored iron-containing pigment present in the RBCs. O2 can bind with hemoglobin in a reversible manner to form oxyhemoglobin. Each hemoglobin molecule can carry a maximum of 4 molecules of O2 .
The partial pressure of O2 and Co2 , hydrogen ion concentration and temperature are the factors which interfere with this binding.
In the alveoli, where there is high pO2 , low pCO2 , Lesser H+ concentration, and low temperature, the factors are all favourable for the formation of oxyhemoglobin. Whereas in the tissues where there is low pO2 , high pCO2 , high H+ concentration, and higher temperature exists, the conditions are favorable for dissociation of oxygen from the oxyhemoglobin. This clearly indicates that O2 gets bound at the surface and gets dissociated at the tissues.
Nearly 20-25 percent of CO2 is transported by hemoglobin as carbamino-hemoglobin. Nearly 70 percent of CO2 is carried as bicarbonate with the help of enzyme carbonic anhydrase. About 7 percent of CO2 is carried in a dissolved state through plasma .
In the tissues where pCO 2 is high, it gets bounds to the blood whereas, in the alveoli where pCO 2 is low and pO 2 is high, it gets removed from the blood.
Regards.