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
A nitrile is an organic chemical that contains a cyano functional group (subunit), CN-, in which the carbon and nitrogen atoms have a triple bond i.e. Câ¡N-. The general chemical formula of a nitrile is RCN, where R is the organic group.