A distinction can be made between proximal ageing (age-based effects that come about because of factors in the recent past) and distal ageing (age-based differences that can be traced back to a cause early in person's life, such as childhood poliomyelitis).
physiologic. pertaining to physiology; normal; not pathologic. physiologic saline solution (physiologic salt solution) (physiologic sodium chloride solution) a 0.9 per cent solution of sodium chloride and water; it is isotonic, i.e., of the same osmotic pressure as blood serum. It is sometimes given intravenously to replace lost sodium and chloride.
physiography (countable and uncountable, plural physiographies) (geography) The subfield of geography that studies physical patterns and processes of the Earth. It aims to understand the forces that produce and change rocks, oceans, weather, and global flora and fauna patterns. 1914, School Science and Mathematics (volume 14, page 119) Questions that bewilder the globe student of seasons are easily answered by pupils who have been taught seasons by the globeless method, as the writer knows from experience with three classes, two in astronomy and one in physiography. The descriptive part of a natural science as distinguished from the explanatory or theoretical part.