Blood has not bee synthesized in the laboratory so far. Therefore, we always depend on the supply of human blood to save the life of patients. To meet the ever increasing demand of human blood, blood donation camps are organised in schools/colleges and other organisations dedicated to social work. to meet the challenge of short supply of human blood, chemists have been making efforts to find out some substitutes for human blood which can atleast supply enough oxygen to save the life of patients. theiir efferts have resulted in the discovery of such chemicals called blood extenders. these compounds have been used to treat premature babies, whose lungs are often under developed. (i) What is the composition of blood extenders? (ii)Discuss the mode of their action.

Blood has not bee synthesized in the laboratory so far. Therefore, we

1.	Blood has not bee synthesized in the laboratory so far. Therefore, we always depend on the supply of human blood to save the life of patients. To meet the ever increasing demand of human blood, blood donation camps are organised in schools/colleges and other organisations dedicated to social work. to meet the challenge of short supply of human blood, chemists have been making efforts to find out some substitutes for human blood which can atleast supply enough oxygen to save the life of patients. theiir efferts have resulted in the discovery of such chemicals called blood extenders. these compounds have been used to treat premature babies, whose lungs are often under developed. (i) What is the composition of blood extenders? (ii)Discuss the mode of their action.
Answer» Solution :(i) Blood EXTENDERS are perfluorocarbons such as perfluorodecalin. (ii) Blood extenders DISSOLVE gases like `O_(2)` and `CO_(2)` and thus serve as temporary SUBSTITUTES for haemoglobin-the oxygen carrying protein in blood.