Carboxyhemoglobin

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Carboxyhemoglobin

Carboxyhemoglobin (pronounced: kar-bok-see-hee-muh-gloh-bin) is a compound of hemoglobin and carbon monoxide.

Etymology

The term "Carboxyhemoglobin" is derived from the words "carboxy", which refers to the carboxyl group (a functional group consisting of a carbon atom double bonded to an oxygen atom and single bonded to a hydroxyl group), and "hemoglobin", the iron-containing oxygen-transport metalloprotein in the red blood cells of almost all vertebrates.

Definition

Carboxyhemoglobin is formed in the blood when carbon monoxide binds to hemoglobin, preventing the hemoglobin from transporting oxygen. This can lead to carbon monoxide poisoning, which can cause symptoms such as headache, dizziness, weakness, nausea, confusion, and even loss of consciousness or death in severe cases.

Related Terms

  • Hemoglobin: The protein molecule in red blood cells that carries oxygen from the lungs to the body's tissues and returns carbon dioxide from the tissues back to the lungs.
  • Carbon Monoxide: A colorless, odorless, and tasteless flammable gas that is slightly less dense than air. It is toxic to hemoglobin animals (including humans) when encountered in concentrations above about 35 ppm.
  • Carbon Monoxide Poisoning: An illness caused by exposure to too much carbon monoxide, a colorless, odorless gas which can cause sudden illness and death.
  • Carboxyl Group: A functional group consisting of a carbon atom double bonded to an oxygen atom and single bonded to a hydroxyl group.

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