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
6.4.3. Nitrous Oxide. Nitrous oxide (N. O) is an important, long-lived greenhouse gas that is emitted predominantly by biological sources in soils and water, and removed in the upper atmosphere via photochemical reactions. Unfortunately, estimates of sources and sinks are not well quantified in global terms. 6.4.3.1.