Forensics

What was the purpose of the bell in 19th Century England?

To prevent accidental burial due to reasons such as birds, winds, or other matters.

What does PMI stand for and why is it important?

PMI stands for Postmortem Interval; it helps reconstruct the timeline of death.

When is a coroner or medical examiner called?

When death involves suspicious circumstances, an unknown cause, or is unnatural.

Who is a pathologist?

A trained forensic specialist who examines bodies to determine the cause and manner of death.

What are the manners of death?

Natural, Accidental, Suicidal, Homicidal, and Undetermined.

Define 'Cause of Death'.

The reason a person died, such as an injury, disease, poisoning, or heart attack.

What is the 'Mechanism of Death'?

The specific body change causing death, for example, cardiac arrest from a heart attack.

What occurs during Stage 1 of the Process of Death?

Heart stops, blood flow stops, no oxygen or glucose to cells leading to anaerobic respiration and lactic acid build-up.

What is Livor Mortis?

Blood pooling due to gravity, causing reddish-purple discoloration that appears around 2 hours after death.

How does Rigor Mortis manifest?

It is a temporary stiffening of muscles beginning around 2 hours after death, peaking about 12 hours later.

What factors influence the rate of body cooling (Algor Mortis)?

Factors include body mass, clothing, and external environmental conditions.

What is putrefaction?

Decay or rotting due to bacteria and enzyme activity, often accompanied by odors and insect activity.

What is an autopsy?

A medical examination to determine the manner and cause of death, typically performed by a forensic pathologist.

What role does forensic entomology play in criminal investigations?

It uses insect evidence to estimate PMI and provide information about the crime scene.

What are the stages of decomposition?

Fresh, Bloated, Active Decay, Advanced Decay, and Dry/Skeletal.

How do blowflies relate to the decomposition process?

They detect decomposition gases, lay eggs on bodies, and their larvae feed on tissues.

What factors affect the estimation of PMI using insects?

Temperature, humidity, rainfall, sunlight/shade, location, presence of wounds, and toxins.

What is DNA retrieval from badly burned or decomposed bodies?

It can be obtained from larvae feeding on the victim.