ABFM Death Investigation & Scene Analysis 2 — Questions and Answers
Question 1: The Henssge nomogram is used in forensic pathology primarily to:
- Identify bloodstain spatter patterns
- Estimate postmortem interval using rectal and ambient temperature along with body weight (Correct answer)
- Determine the trajectory of a fired projectile
- Calculate skeletal age from bone density
Correct answer: Estimate postmortem interval using rectal and ambient temperature along with body weight
The Henssge nomogram is a mathematical tool that estimates postmortem interval by comparing rectal body temperature to ambient temperature, accounting for body weight.
Question 2: Which insect order is typically the first to colonize a human body after death in temperate climates?
- Coleoptera (beetles)
- Diptera (flies) (Correct answer)
- Hymenoptera (ants and wasps)
- Lepidoptera (moths)
Correct answer: Diptera (flies)
Blowflies (Calliphoridae, order Diptera) are usually the first colonizers, arriving within minutes to hours of death, attracted by decomposition odors.
Question 3: The postmortem transformation of body fat into a waxy, soap-like substance is known as:
- Mummification
- Adipocere formation (Correct answer)
- Skeletonization
- Putrefaction
Correct answer: Adipocere formation
Adipocere (saponification) occurs when body fat undergoes hydrolysis and solidifies in moist, anaerobic burial environments, preserving the body's shape.
Question 4: Under which circumstance should a medical examiner typically assume jurisdiction over a death?
- When the deceased had a documented chronic illness
- When death is sudden, unexpected, violent, or of unknown cause (Correct answer)
- Only when the family formally requests an autopsy
- Only when law enforcement identifies a criminal suspect
Correct answer: When death is sudden, unexpected, violent, or of unknown cause
Medical examiners take jurisdiction over sudden, unexpected, violent, suspicious, work-related, or unknown-cause deaths regardless of whether criminal activity is initially suspected.
Question 5: Petechial hemorrhages found in the conjunctiva and sclera at autopsy most commonly suggest:
- Anticoagulant poisoning
- Asphyxia or compression of cervical vessels (Correct answer)
- Blunt force trauma to the cranium
- Severe hypertension at the time of death
Correct answer: Asphyxia or compression of cervical vessels
Petechiae in the eyes result from elevated venous pressure rupturing capillaries, classically seen in asphyxia, strangulation, or other neck compression.
Question 6: Which of the following best describes mummification as a postmortem change?
- Conversion of body fat into a waxy substance in wet environments
- Desiccation and dehydration of tissues that inhibits decomposition and preserves the body (Correct answer)
- Liquefaction of internal organs due to autolysis
- Mineralization of bone calcium in alkaline soil
Correct answer: Desiccation and dehydration of tissues that inhibits decomposition and preserves the body
Mummification occurs when rapid moisture loss through desiccation in hot, dry, or well-ventilated environments inhibits bacterial decomposition, preserving the body.
Question 7: Which of the following is correctly classified as a natural manner of death?
- Drowning in a bathtub
- Unintentional prescription opioid overdose
- Death from ischemic heart disease (Correct answer)
- Death resulting from a fall
Correct answer: Death from ischemic heart disease
A natural manner of death results entirely from disease or internal biological processes; ischemic heart disease has no external contributing factor, unlike the other options.
ABFM Death Investigation & Scene Analysis 2
The Henssge nomogram is used in forensic pathology primarily to: