A mummy is a dead human or an animal whose soft tissues and organs have been preserved by either intentional or accidental exposure to chemicals, extreme cold, very low humidity, or lack of air, so that the recovered body does not decay further if kept in cool and dry conditions. Some authorities restrict the use of the term to bodies deliberately embalmed with chemicals, but the use of the word to cover accidentally desiccated bodies goes back to at least the early 17th century.
Burial, also known as interment or inhumation, is a method of final disposition whereby a dead body is placed into the ground, sometimes with objects. This is usually accomplished by excavating a pit or trench, placing the deceased and objects in it, and covering it over. A funeral is a ceremony that accompanies the final disposition. Evidence suggests that some archaic and early modern humans buried their dead. Burial is often seen as indicating respect for the dead. It has been used to prevent the odor of decay, to give family members closure and prevent them from witnessing the decomposition of their loved ones, and in many cultures it has been seen as a necessary step for the deceased to enter the afterlife or to give back to the cycle of life.
Decomposition or rot is the process by which dead organic substances are broken down into simpler organic or inorganic matter such as carbon dioxide, water, simple sugars and mineral salts. The process is a part of the nutrient cycle and is essential for recycling the finite matter that occupies physical space in the biosphere. Bodies of living organisms begin to decompose shortly after death. Animals, such as earthworms, also help decompose the organic materials. Organisms that do this are known as decomposers or detritivores. Although no two organisms decompose in the same way, they all undergo the same sequential stages of decomposition. The science which studies decomposition is generally referred to as taphonomy from the Greek word taphos, meaning tomb. Decomposition can also be a gradual process for organisms that have extended periods of dormancy.
Embalming is the art and science of preserving human remains by treating them to forestall decomposition. This is usually done to make the deceased suitable for viewing as part of the funeral ceremony or keep them preserved for medical purposes in an anatomical laboratory. The three goals of embalming are sanitization, presentation, and preservation, with restoration being an important additional factor in some instances. Performed successfully, embalming can help preserve the body for many years. Embalming has a very long and cross-cultural history, with many cultures giving the embalming processes religious meaning.
Putrefaction is the fifth stage of death, following pallor mortis, livor mortis, algor mortis, and rigor mortis. This process references the breaking down of a body of an animal post-mortem. In broad terms, it can be viewed as the decomposition of proteins, and the eventual breakdown of the cohesiveness between tissues, and the liquefaction of most organs. This is caused by the decomposition of organic matter by bacterial or fungal digestion, which causes the release of gases that infiltrate the body's tissues, and leads to the deterioration of the tissues and organs. The approximate time it takes putrefaction to occur is dependent on various factors. Internal factors that affect the rate of putrefaction include the age at which death has occurred, the overall structure and condition of the body, the cause of death, and external injuries arising before or after death. External factors include environmental temperature, moisture and air exposure, clothing, burial factors, and light exposure. Body farms are facilities that study the way various factors affect the putrefaction process.
Adipocere, also known as corpse wax, grave wax or mortuary wax, is a wax-like organic substance formed by the anaerobic bacterial hydrolysis of fat in tissue, such as body fat in corpses. In its formation, putrefaction is replaced by a permanent firm cast of fatty tissues, internal organs, and the face.
Dissection is the dismembering of the body of a deceased animal or plant to study its anatomical structure. Autopsy is used in pathology and forensic medicine to determine the cause of death in humans. Less extensive dissection of plants and smaller animals preserved in a formaldehyde solution is typically carried out or demonstrated in biology and natural science classes in middle school and high school, while extensive dissections of cadavers of adults and children, both fresh and preserved are carried out by medical students in medical schools as a part of the teaching in subjects such as anatomy, pathology and forensic medicine. Consequently, dissection is typically conducted in a morgue or in an anatomy lab.
In archaeology and anthropology, the term excarnation refers to the practice of removing the flesh and organs of the dead before burial. Excarnation may be achieved through natural means, such as leaving a dead body exposed to the elements or for animals to scavenge; or by butchering the corpse by hand. Following excarnation, some societies retrieved the excarnated bones for burial. Excarnation has been practiced throughout the world for hundreds of thousands of years. The earliest archaeological evidence of excarnation is from the Awash River Valley in Ethiopia, 160,000 years ago. Examples of excarnation include "sky burials" in parts of Asia, the Zoroastrian "Tower of Silence", and Native American "tree burials". Excarnation is practiced for a variety of spiritual and practical reasons, including the Tibetian spiritual belief that excarnation is the most generous form of burial and the Comanche practical concern that in the winter the ground is too hard for an underground burial. Excarnation sites are identifiable in the archaeological record by a concentration of smaller bones, which would be the bones that would be the easiest to fall off the body, and that would not be noticed by practitioners of excarnation.
Body snatching is the illicit removal of corpses from graves, morgues, and other burial sites. Body snatching is distinct from the act of grave robbery as grave robbing does not explicitly involve the removal of the corpse, but rather theft from the burial site itself. The term 'body snatching' most commonly refers to the removal and sale of corpses primarily for the purpose of dissection or anatomy lectures in medical schools. The term was coined primarily in regard to cases in the United Kingdom and United States throughout the 17th, 18th, and 19th centuries. However, there have been cases of body snatching in many countries, with the first recorded case dating back to 1319 in Bologna, Italy.
A dakhma, also known as a Tower of Silence, is a circular, raised structure built by Zoroastrians for excarnation, in order to avoid contamination of the soil and other natural elements by the decomposing dead bodies. Carrion birds, usually vultures and other scavengers, consume the flesh. Skeletal remains are gathered into a central pit where further weathering and continued breakdown occurs.
A funeral director, also known as an undertaker or mortician, is a professional who has licences in funeral arranging and embalming involved in the business of funeral rites. These tasks often entail the embalming and burial or cremation of the dead, as well as the arrangements for the funeral ceremony. Funeral directors may at times be asked to perform tasks such as dressing, casketing, and cossetting with the proper licences. A funeral director may work at a funeral home or be an independent employee.
The ancient Egyptians had an elaborate set of funerary practices that they believed were necessary to ensure their immortality after death. These rituals included mummifying the body, casting magic spells, and burials with specific grave goods thought to be needed in the afterlife.
Sky burial is a funeral practice in which a human corpse is placed on a mountaintop to decompose while exposed to the elements or to be eaten by scavenging animals, especially carrion birds like vultures and corvids. Comparable excarnation practices are part of Zoroastrian burial rites where deceased are exposed to the elements and scavenger birds on stone structures called Dakhma. Sky burials are endemic to Tibet, Qinghai, Sichuan, and Inner Mongolia, as well as in Mongolia, Nepal, Bhutan, and parts of India such as Sikkim and Zanskar. The locations of preparation and sky burial are understood in the Vajrayana Buddhist traditions as charnel grounds. Few such places remain operational today, as the Chinese Communist Party initially banned the practice completely during the Cultural Revolution as feudal superstition, and continues to restrict the practice due to its allegations of decimation of vulture populations.
Disposal of human corpses, also called final disposition, is the practice and process of dealing with the remains of a deceased human being. Disposal methods may need to account for the fact that soft tissue will decompose relatively rapidly, while the skeleton will remain intact for thousands of years under certain conditions.
In death customs, a viewing is the time that family and friends come to see the deceased before the funeral, once the body has been prepared by a funeral home. It is generally recommended that a body first be embalmed to create the best possible presentation of the deceased. A viewing may take place at the funeral home's chapel, in a family home or at a place of worship, such as a church. Some cultures, such as the Māori of New Zealand, often take the body to the marae or tribal community hall.
Natural burial is the interment of the body of a dead person in the soil in a manner that does not inhibit decomposition but allows the body to be naturally recycled. It is an alternative to typical contemporary Western burial methods and modern funerary customs.
A cadaver or corpse is a dead human body. Cadavers are used by medical students, physicians and other scientists to study anatomy, identify disease sites, determine causes of death, and provide tissue to repair a defect in a living human being. Students in medical school study and dissect cadavers as a part of their education. Others who study cadavers include archaeologists and arts students. In addition, a cadaver may be used in the development and evaluation of surgical instruments.
The death care industry in the United States includes companies and organizations that provide services related to death: funerals, cremation or burial, and memorials. This includes for example funeral homes, coffins, crematoria, cemeteries, and headstones. The death care industry within the U.S. consists mainly of small businesses, although there has been considerable consolidation over time.
Jar burial is a human burial custom where the corpse is placed into a large earthenware container and then interred. Jar burials are a repeated pattern at a site or within an archaeological culture. When an anomalous burial is found in which a corpse or cremated remains have been interred, it is not considered a "jar burial".
The secondary burial, or “double funeral” is a feature of prehistoric and historic gravesites. The term refers to remains that represent an exhumation and reburial, whether intentional or accidental.
