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
Nitrous oxide (N2O) is a colorless, odorless gas and was first discovered in 1793 by the English scientist Joseph Priestley. It is also known as  laughing gas .At room temperature, it is non-flammable with a pleasant and sweet taste.Nitrous oxide is relatively non-polar, has a low molecular weight, and high lipid solubility. The molecular weight of nitrous oxide is 44.01.itrous oxide (N2O) is a colorless, odorless gas and was first discovered in 1793 by the English scientist Joseph Priestley. It is also known as  laughing gas .