physiogeny

from The Century Dictionary.

• noun In biology, the genesis of function; the development or evolution of those functions of living matter which are the province of physiology.
• noun The science or history of the evolution of functions of living matter.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Biol.) The germ history of the functions, or the history of the development of vital activities, in the individual, being one of the branches of ontogeny. See morphogeny.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun biology The germ history of the functions, or the history of the development of vital activities, in the individual, being one of the branches of ontogeny.