Also known as the prosencephalon, the forebrain is mostly comprised of the cerebrum, which is divided into two hemispheres. The two main sections of the forebrain, however, are the telencephalon and the diencephalon.
Carbon monoxide consists of one carbon atom and one oxygen atom, connected by a triple bond that consists of two covalent bonds as well as one dative covalent bond. It is the simplest oxocarbon and is isoelectronic with the cyanide anion, the nitrosonium cation and molecular nitrogen.
Carbon monoxide is an odorless, nonirritating gas that readily binds to hemoglobin, reducing the ability of the blood to carry oxygen. The affinity of CO for hemoglobin in approximately 250 times that of oxygen, so a CO concentration of as little as 0.1% is capable of producing a COHgb of 50%.