Orthogenesis is a similar concept to endogeny but refers to changes within separate systems that results in their evolution along similar paths.<ref name=":0" />{{Rp|8}} The concept of orthogenesis has never been widely favored in evolutionary biology.<ref name=":0" />{{Rp|8}}
Orthogenesis is a similar concept to endogeny but refers to changes within separate systems that results in their evolution along similar paths.<ref name=":0" />{{Rp|8}} The concept of orthogenesis has never been widely favored in evolutionary biology.<ref name=":0" />{{Rp|8}}
Endogeny can refer to changes that originate from within a system<ref name=":0" />{{Rp|8}}. Endogenous changes can occur in social systems and can be modelled by Marxian dialectics<ref name=":0" />{{Rp|8}}.
Endogeny can refer to changes that originate from within a system.<ref name=":0" />{{Rp|8}} Endogenous changes can occur in social systems and can be modelled by Marxian dialectics.<ref name=":0" />{{Rp|8}}
Endogenous substances and processes are those that originate from within a system such as an organism, tissue, or cell.[1] The term is chiefly used in biology but also in other fields.[nb 1]
Endogenous substances and processes contrast with exogenous ones, such as drugs, which originate from outside of the organism.
Endogenous substances
Cell signalling systems such as hormone and neurotransmitter systems use endogenous substances. Endogenous substances can regulate sleep.[2]: 1 Examples of endogenous substances, and systems that use them, include
The endogenous cannabinoid system, from which the term "endocannabinoid" derives. The endocannabinoid system is important in physiology but can be modulated by exogenous phytocannabinoids originating from outside the organism, such as THC.[3]
Endogenous opioids, which are peptides, such as enkephalins and endorphins, that can modulate the opioid system.[5] The term "endorphin" is derived from "endogenous morphine".
Nitric oxide, which is an endogenous cell signalling molecule.[6]
Endogenous biological clocks and biological rhythms originating from endogenous mechanisms allow forms of biochronometry.[8]: 281–282
Endogenous effects, in conjunction with environmental influences, can change systems.[9]: 8
Orthogenesis is a similar concept to endogeny but refers to changes within separate systems that results in their evolution along similar paths.[9]: 8 The concept of orthogenesis has never been widely favored in evolutionary biology.[9]: 8
Endogeny can refer to changes that originate from within a system.[9]: 8 Endogenous changes can occur in social systems and can be modelled by Marxian dialectics.[9]: 8
The dictionary definition of endogeny (biology) at Wiktionary
