Which option best describes the mechanism of death?

• A. Cause of death
• B. Manner of death
• C. The physiological instability produced by the cause that results in death
• D. Postmortem change

Answer: (C)

The mechanism of death is the physiological instability produced by the cause that leads to death. In forensic terms, it’s the specific pathophysiological process that actually stops life, not just the injury or disease itself. For example, a gunshot wound to the chest is a cause of death, but the mechanism would be the resulting exsanguination and hypoxia that cause circulatory collapse.

The other concepts are distinct: the cause of death is the disease or injury (the reason death occurred), the manner of death is the classification (natural, accident, homicide, suicide, undetermined), and postmortem changes are things that happen after death (rigor, livor, algor mortis, decomposition). The mechanism sits between the cause and the death itself, describing how the cause produces death through a physiological disturbance.