What is the maintaining stable conditions inside the body?

Answer – Homeostasis
 Homeostasis refers to an organism’s in-built mechanism to maintain stable condition of the organism and of its internal environment. Simply put, homeostasis generally deals with all the processes of regulation and maintenance in an organism to keep up a balance of bodily functions.

This gel or liquid can be placed under the tongue of an unconscious person. this is important because you should never pour anything down the throat of an unconscious person-- s/he could choke.