Editing Cannula (section)

==Non-medical use==
[[File:Air sensitive cannula - syringe valve 1.png|thumb|Air-sensitive cannula used in [[synthetic chemistry]]]]In biological research, a push-pull cannula, which both withdraws and injects fluid, can be used to determine the effect of a certain chemical on a specific [[cell (biology)|cell]]. The push part of the cannula is filled with a physiological solution plus the chemical of interest and is then injected slowly into the local cellular environment of a cell. The pull cannula then draws liquid from the extracellular medium, thus measuring the cellular response to the chemical of interest. This technique is especially used for [[neuroscience]].

In general aviation, a cannula refers to a piece of plastic tubing that runs under the nose and is used to administer oxygen in non-pressurized aircraft flying 10,000 feet above sea level.

In synthetic chemistry, a cannula refers to a piece of stainless steel or plastic tubing used to transfer liquids or gases from one vessel to another without exposure to air. See more at [[Cannula transfer]].