Involved in the mechanics of breathing; The muscles involved in this type of breathing are the diaphragm, the external intercostal muscles, and the accessory respiratory muscles (activated when respiration increases significantly) Forced Exhalation.
Nitro- a combining form (used also adjectively) designating certain compounds of nitrogen or of its acids, as nitrohydrochloric, nitrocalcite; also, designating the group or radical NO2, or its compounds, as nitrobenzene
The definition of a narcotic in a chemical sense is an opium derivative or chemically related synthetic or semi-synthetic substances. According to that definition, cocaine, marijuana, and amphetamines are not narcotics. However, the legal definition includes cocaine in some areas of the world, such as the USA.