The Probert Encyclopaedia of General Information

FUNCTION

Function is the specific office or action which any organ or system of organs is fitted to perform in the animal or vegetable economy. Vital functions are functions immediately necessary to life, as those of the brain, heart, lungs, etc. Natural or vegetative functions, functions less instantly necessary to life, as digestion, absorption, assimilation, expulsion, etc. Animal functions are those which relate to the external world, as the senses, voluntary motions, etc.
Research Function