Your body stiffens, first, at your face and neck. The stiffening progresses to the trunk of your body and gradually radiates outward to your arms and legs and then your fingers and toes. Your body loosens again. A few days after death, your body's tissue breaks down, causing the stiff parts to relax again.
Decomposition can divide into five stages – fresh, early decomposition, advanced decomposition, skeletonization, and extreme decomposition. The early decomposition phase begins with the onset of skin slippage and hair loss. These changes usually begin from the first day after death to up to five days post-mortem.
For the first few minutes of the postmortem period, brain cells may survive. The heart can keep beating without its blood supply. A healthy liver continues breaking down alcohol. And if a technician strikes your thigh above the kneecap, your leg likely kicks, just as it did at your last reflex test with a physician.
A corpse generally progresses through five stages of decomposition—fresh, bloat (autolysis), active decay (putrefaction), advanced decay and skeletonisation.
As the blood pools, patches appear on the skin within 30 minutes of death. About two to four hours postmortem, these patches join up, creating large dark purplish areas towards the bottom of the body and lightening the skin elsewhere. This may be less apparent on darker skin. This process is called livor mortis.
In a coffin or casket, a body will decompose over time. During the first few months underground, the body will typically undergo active decay, putrefaction, and blackening. Over several decades, the tissue and organs will continue to break down and liquefy until only the teeth remain.
“Our data shows that a dying brain can respond to sound, even in an unconscious state, up to the last hours of life.”
What Happens One Hour After Death? At the moment of death, all of the muscles in the body relax (primary flaccidity ). The eyelids lose their tension, the pupils dilate, the jaw may fall open, and the joints and limbs are flexible.
Although death has historically been medically defined as the moment when the heart irreversibly stops beating, recent studies have suggested brain activity in many animals and humans can continue for seconds to hours.
In time, the heart stops and they stop breathing. Within a few minutes, their brain stops functioning entirely and their skin starts to cool. At this point, they have died.
Bone and skin cells can stay alive for several days. It takes around 12 hours for a human body to be cool to the touch and 24 hours to cool to the core. Rigor mortis commences after three hours and lasts until 36 hours after death. Forensic scientists use clues such as these for estimating the time of death.
One of the first things people traditionally do if someone dies is, they will tie the big toes of the dead body together. This is very important because it will tighten up the muladhara in such a way that the body cannot be invaded by that life once again.
Agonal breathing or agonal gasps are the last reflexes of the dying brain. They are generally viewed as a sign of death, and can happen after the heart has stopped beating.
Burials may be placed in a number of different positions. Bodies with the arms crossed date back to ancient cultures such as Chaldea in the 10th century BC, where the "X" symbolized their sky god.
Hearing is widely thought to be the last sense to go in the dying process. Now UBC researchers have evidence that some people may still be able to hear while in an unresponsive state at the end of their life.
Pupils dilate
When people die, their bodies relax. This impacts your eyes just as much as the rest of your body. As soon as the muscles that control your eye movement relax, the pupils dilate. This happens over a progression of several hours after death.
A conscious dying person can know if they are on the verge of dying. Some feel immense pain for hours before dying, while others die in seconds. This awareness of approaching death is most pronounced in people with terminal conditions such as cancer.
After someone dies, it's normal to see or hear them. Some people also reporting sensing the smell or warmth of someone close to them, or just feel a very strong sense of their presence. Sometimes these feelings can be very powerful. They may be comforting but also feel disturbing.
Purge fluid is foul smelling, red-brown fluid that may exude from the oral and nasal passages as decomposition progresses, as depicted in the image below.
Terminal respiratory secretions, commonly known as a “death rattle,” occur when mucous and saliva build up in the patient's throat. As the patient becomes weaker and/or loses consciousness, they can lose the ability to clear their throat or swallow.
It is a common practice to cover the legs as there is swelling in the feet and shoes don't fit. As part of funeral care, the body is dressed and preserved, with the prime focus on the face. Post embalming, bodies are often placed without shoes; hence covering the legs is the way to offer a dignified funeral.
By 50 years in, your tissues will have liquefied and disappeared, leaving behind mummified skin and tendons. Eventually these too will disintegrate, and after 80 years in that coffin, your bones will crack as the soft collagen inside them deteriorates, leaving nothing but the brittle mineral frame behind.
After two weeks, the body starts to bloat and change its color to red after the blood present in the body starts to decompose. Once the corpse surpasses the fourth week, you can witness liquefaction in the rest of the remains. The teeth and nails also begin to fall during this time frame.
Visions and Hallucinations
Visual or auditory hallucinations are often part of the dying experience. The appearance of family members or loved ones who have died is common. These visions are considered normal. The dying may turn their focus to “another world” and talk to people or see things that others do not see.