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Ileum, caecum and colon of rabbit, showing Appendix vermiformis on fully functional caecum The human vermiform appendix on the vestigial caecum. The appendix was once believed to be a vestige of a redundant organ that in ancestral species had digestive functions, much as it still does in extant species in which intestinal flora hydrolyze cellulose and similar indigestible plant materials. [10]
Many examples of these are vestigial in other primates and related animals, whereas other examples are still highly developed. The human caecum is vestigial, as often is the case in omnivores , being reduced to a single chamber receiving the content of the ileum into the colon .
This is a list of bog bodies grouped by location of discovery. Bog bodies, or bog people, are the naturally preserved corpses of humans and some animals recovered from peat bogs . The bodies have been most commonly found in the Northern European countries of Denmark, Germany, The Netherlands, the United Kingdom, and Ireland.
Tollund Man, Denmark, 4th century BC Gallagh Man, Ireland, c. 470–120 BC. A bog body is a human cadaver that has been naturally mummified in a peat bog.Such bodies, sometimes known as bog people, are both geographically and chronologically widespread, having been dated to between 8000 BC and the Second World War. [1]
In sociology and psychology, mass hysteria is a phenomenon that transmits collective illusions of threats, whether real or imaginary, through a population and society as a result of rumors and fear. [ 1 ] [ 2 ] In medicine, the term is used to describe the spontaneous manifestation—or production of chemicals in the body—of the same or ...
He also writes that they are more vestigial in the 'civilized' races as opposed to African race, which he attributes to diet. Richard001 23:42, 5 July 2007 (UTC) If wisdom teeth are more vestigial in societies whose diet has changed as a result of agriculture, then their vestigiality is largely dependent on the society in which the diet exists.
This is a non-exhaustive list of societies that have been described as examples of stateless societies. There is no universally accepted definition of what constitutes a state, [1] or to what extent a stateless group must be independent of the de jure or de facto control of states so as to be considered a society by itself.
The subjective experience of being unseen by others in a social environment is social invisibility. A sense of disconnectedness from the surrounding world is often experienced by invisible people. This disconnectedness can lead to absorbed coping and breakdowns, based on the asymmetrical relationship between someone made invisible and others. [5]