A cadaver or corpse is a dead body. "Cadaver" is normally used as a more formal term for a body being used in medical training or research
a dead body, esp. a human body to be dissected; corpse.
Blood circulation has ceased and they no longer produce their own warmth. Additionally they may be put into a freezer to slow down decomposition.
Well in Islam you read: All praise be Allah, who has givien us life after taking it away and to him is our return.