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2003 June >
Forensic Medicine & Toxicology
- True statement about rigor mortis includes all of
the following, except?
A. First appears in the neck
B. During summer lasts for 24 - 48 hrs
C. During winter lasts for 48 - 72 hrs
D. Appears and disappears in ascending and descending
order
E. Occurs early following drowning
Ans: A, E
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explanations, to
mcqs@netmedicos.com ]
[Explanation -
Rigor Mortis (from Study FMT @ netmedicos.com)
- Sequence of -
- Appearance -
First appears in involuntary
muscles - myocardium
(in one hour)
Muscles of face ß
Eyelids, neck &
Lower jaw à
chest à
upper limbs à
abdomen à
lower limbs
- Disappearance -
Same as above
- Time of onset -
- In India
- Begins - in 1 to 2 hours
after death
- Takes
1 to 2 more hours to develop
- In Temperate climate
- Begins - in 3 to 6 hours
after death
- Takes further 2 to 3 hours to develop
- Duration -
- In India it lasts for
- 18 - 36 hours in summer
- 24 - 48 hours in winter
- In Temperate climate
- Conditions altering onset and duration -
- Early onset and short duration -
- death from diseases causing great exhaustion e.g.
cholera, cancer, tuberculosis, typhoid;
- Violent deaths -
firearm, electrocution, heat stroke, cut-throat
- Early onset and long duration - Strychnine
poisoning
Explanations have been marked
in red]
- Putrefaction is delayed in poisoning due to?
A. Arsenic
B. Mercury
C. Nitric acid
D. Lead
E. Iron
Ans: A
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explanations, to
mcqs@netmedicos.com ]
[Explanation -
Putrefaction (from Study FMT @ netmedicos.com)
- Frist external sign
- Greenish discolouration of
skin over caecum (Right iliac fossa)
- First internal change
- reddish brown discolouration of inner surface
of blood vessels, esp. aorta
- Time of appearance-
- The external colour appears -
- in 12 - 18 hours in summer
- in 1 - 2 days in winter
- Marbled appearence - prominent in 36 - 48 hours
- Conditions altering onset
and duration -
- Delayed putrefaction - in poisoning with -
- Carbolic acid, Arsenic
& Antimony, Strychnine, Zinc chloride]
- Activated charcoal is used in poisoning with?
A. Alcohol
B. Arsenic
C. Barbiturates
D. Lead
E. Mercury
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explanations, to
mcqs@netmedicos.com ]
- A patient is brought with opium poisoning. The
antagonists to opium include?
A. Buprenorphine
B. Meptazinol
C. Nalorphine
D. Neostigmine
E. Pyridostigmine
Ans: C
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explanations, to
mcqs@netmedicos.com ]
- Among the following, the ones that are
organophosphates include?
A. Dieldrin
B. Kepone
C. Malathion
D. Parathion
E. Propoxur
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explanations, to
mcqs@netmedicos.com ]
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