How does cigratte cause the reduction of oxygen carry in the blood?

Answer 1

The carbon monoxide in the smoke bonds more easily to the hemoglobin, thus reducing the hemoglobin available to carry oxygen.

Answer 2

Same way Helium does.

Your red blood cells are like any other vehicle- there's only so much space available for transporting cargo/pasengers. We want O2, but if the air we breath has Helium or Carbon Monoxide instead, then all the space is filled with He or CO instead.

Basically, the other gases take all the seats on the bus, and there's no room for O2...

Answer 3

Smoking cigarettes causes higher concentration of carbon monoxide in blood. This gas competes for "binding sites" of oxygen in the haemoglobin of blood. Carbon monoxide therefore replaces oxygen of haemoglobin and sits there. Only the oxygen that is bound to haemoglobin is available for use. Thus, "oxygen,oxygen everywhere but no oxygen to use"

Answer 4

As I understand it, nicotine also binds to the oxygen receptor sites in the hemoglobin, thereby also reducing the amount of oxygen in the blood. I'm not a biologist, but a doctor told me that once.

Answer 5

Incomplete combustion of the tobacco produces carbon monoxide. Carbon monoxide bonds strongly to hemoglobin, tying it up so it can't bind oxygen (normally hemoglobin binds oxygen in the lungs and releases it in the tissue). With the hemoglobin tied up to the carbon monoxide, blood oxygen is reduced.

Answer 6

CO. Cigarettes, when burning and the smoke is inhaled, replace the take-up of oxygen to a significant degree by the hemoglobin protein.