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When CO is not ventilated it binds to hemoglobin, which is the principal oxygen-carrying compound in blood; this produces a compound known as carboxyhemoglobin. The traditional belief is that carbon monoxide toxicity arises from the formation of carboxyhemoglobin, which decreases the oxygen-carrying capacity of the blood and inhibits the transport, delivery, and utilization of oxygen by the body. The affinity between hemoglobin and carbon monoxide is approximately 230 times stronger than the affinity between hemoglobin and oxygen so hemoglobin binds to carbon monoxide in preference to oxygen. ~ Wikipedia.

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This produces a compound known as carboxyhemoglobin. CO is 230 times stronger than the affinity between hemoglobin and oxygen so hemoglobin binds to carbon monoxide in preference to oxygen.

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Q: In an unventilated space carbon monoxide from smoke or car exhaust builds up in the blood combining with hemoglobin to form?
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Related questions

What do cars have in their exhaust gases to reduce carbon monoxide?

Cars do not have anything in their exhaust to reduce carbon monoxide. A Catalytic Convertor in the Exhaust System is used to remove Carbon Monoxide from the exhaust gasses.


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No. In fact, the exact opposite occurs. Hemoglobin is the Oxygen carrying molecule in red blood cells. It binds to Oxygen in the lungs, and releases it to all the tissues in your body. Carboxyhemoglobin is a hemoglobin molecule that has bound to Carbon Monoxide. Carbon monoxide is a molecule that typically results from fires. The most common exposures are engine exhaust and tobacco smoke. The bond between carbon monoxide and hemoglobin is much stronger than that of oxygen and hemoglobin. Therefore, a slow exposure to exhaust fumes will slowly build up the concentration of carboxyhemoglobin, and the result can be extremely dangerous, including death. Since a hemoglobin molecule that is bound to carbon monoxide cannot be used to deliver oxygen, the oxygen levels in your body will decrease. Early symptoms of carbon monoxide exposure are headaches, dizziness, confusion, or loss of consciousness. If you find someone who has any of these symptoms when exposed to car exhaust fumes, you must call 911 immediately. Open the garage, and move them to a well-ventilated area while you wait for help to arrive.


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Does carbon monoxide bond to hemoglobin more effectively then oxygen does?

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