Capillaries are minute blood vessels that join onto the arterioles. They are one cell thick and are exchange points where the nutrients (oxygen and glycogen) cross into the tissue cells (muscles) from the arterioles.
An average human body takes from two to three hours to burn completely and will produce an average of 3 to 9 pounds (1.4 to 4.1 kilograms) of ash.The amount of ash depends usually on the bone structure of the person and not so much their weight [source: Ellenberg ].n average human body takes from two to three hours to burn completely and will produce an average of 3 to 9 pounds (1.4 to 4.1 kilograms) of ash.
Cremation is the process of reducing human remains to its basic elements in the form of bone fragments through flame, heat and vaporization (usually 1800 - 2000 degrees Fahrenheit for two hours or more.) Cremation occurs at a crematory in a special kind of furnace called a cremation chamber or retort.