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Endogenous
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The word endogenous means "arising from within", the opposite of exogenous. Biology Endogenous substances are those that originate from within an organism, tissue, or cell . Endogenous retrovirus are caused by ancient infections of germ cells in humans, mammals and other vertebrates. Their proviruses remain in the genome and are passed on to the next generation. In some biological systems, endogeneity refers to the recipient of DNA (usually in prokaryotes). However, due to homeostasis, discerning between internal and external influences is often difficult. Geology All processes that take place inside Earth (and other planets) are considered endogenous. They make the continents migrate, push the mountains up, and trigger earthquakes and vulcanism. Endogenous processes are driven by the warmth that is produced in the core of Earth by radioactivity and gravity. Psychology An emotion or behaviour is endogenous if it is spontaneously generated from an individual's internal state. See Also
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