In normal cases, which organ is typically the first to decompose?

The lining of the trachea and larynx is typically the first to decompose in normal cases due to its high level of metabolic activity and the presence of a moist environment that encourages bacterial growth. The trachea and larynx are lined with mucous membranes that are rich in cells and contain numerous blood vessels, which can lead to rapid decomposition when the body ceases to function.

In contrast, while the stomach and liver do also contain bacteria that contribute to decomposition, they usually break down more slowly than the soft tissues found in the respiratory tract. The brain, although it decomposes relatively quickly due to its high fat content and soft tissue nature, does not decompose first; it is generally after other organs such as the lining of the trachea and larynx. Therefore, the lining of the trachea and larynx is regarded as the area that begins the decomposition process due to these specific biological characteristics.