Allison Nicole | 19 | Ohio | Music Industry Major

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Human Death and Decay

• when your heart stops beating, your body’s cells and tissues stop receiving oxygen. Brain cells are the first to die — usually within three to seven minutes Bone and skin cells, though, will survive for several days.)
• Blood begins draining from the capillaries, pooling in lower-lying portions of the body, creating a pale appearance in some places and a darker appearance in others.
• About three hours after death, rigor mortis — a stiffening of muscles — sets in. 
• Around 12 hours after death, the body will feel cool, and within 24 hours (depending on body fat and external temperatures), it will lose all internal heat in a process called algor mortis. 
• The muscle tissue begins to lose its stiffness after about 36 hours, and within about 72 hours of dying, the body’s rigor mortis will subside.
• As the cells die, bacteria within the body begin breaking them down. Enzymes in the pancreas cause the organ to digest itself. The body soon takes on a gruesome appearance and smell. 
• Decomposing tissue emits a green substance, as well as gasses such as methane and hydrogen sulfide.
• The lungs expel fluid through the mouth and nose.
• Insects and animals certainly take notice of all this. A human body provides sustenance and a great place for insects to lay eggs. A fly trying to find its way in this crazy, mixed-up world can eat well on a corpse, and then lay up to 300 eggs upon it that will hatch within a day.

The environment in which a dead body is placed also affects its rate of decay. For instance, bodies in water decompose twice as fast as those left unburied on land. Decomposition is slowest underground — especially in clay or other solid substances that prevent air from reaching the body since most bacteria require oxygen to survive.

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