Many cultures and religions have a concept of an afterlife. There are also different customs for honoring the lifeless body, such as a funeral, cremation, or sky burial.
https://en.wikipedia.org/wiki/Funeral
https://en.wikipedia.org/wiki/Cremation
https://en.wikipedia.org/wiki/Sky_burial
https://en.wikipedia.org/wiki/Grieving_process
The stages that follow after death are:
Pallor mortis, paleness which happens in 15–120 minutes after death
Livor mortis, a settling of the blood in the lower (dependent) portion of the body
Algor mortis, the reduction in body temperature following death. This is generally a steady decline until matching ambient temperature
Rigor mortis, the limbs of the corpse become stiff (Latin rigor) and difficult to move or manipulate
Putrefaction, the beginning signs of decomposition
Decomposition, the reduction into simpler forms of matter, accompanied by a strong, unpleasant odor.
Skeletonization, the end of decomposition, where all soft tissues have decomposed, leaving only the skeleton.
Fossilization, the natural preservation of the skeletal remains formed over a very long period
Donations
Rasam Pagri – appointment of successor on 4th day after death
Google book. Veins of Devotion: Blood Donation and Religious Experience in North India
https://en.wikipedia.org/wiki/Dead_donor_rule