Galen: On the Natural Faculties by Galen

Chapter X

60 words  |  Chapter 14

Nutrition not a simple process. (1) Need of subsidiary organs for the various stages of alteration, _e.g._, of bread into blood, of that into bone, etc. (2) Need also of organs for excreting the non-utilizable portions of the food, _e.g._, much vegetable matter is superfluous. (3) Need of organs of a third kind, for distributing the pabulum through the body.