Identification methods Flashcards
___ years before a person can be presumed dead
7
In terms of value of different points of identification, visual recognition by relatives or friends vs fingerprints or dental comparison
Visual recognition is of lesser value than finger prints or dental comparison
To determine the complexion, the patient’s whole body should be exposed to ______ (UV, Ordinary sunlight)
Ordinary sunlight
(Type of facies) Nose is pinched, temple hollow, eyes sunken, ears cold, lips relaxed, skin livid
Hippocratic facies
(Type of facies) Almond eyes, pale complexion, prominence of cheek of cheek bones
Mongoloid facies
Name the method of approximating height
- (length of one arm x 2) + (length of clavicle + 12in) + (length of sternum + 1.5 in)
- (length of vertex of the skull to the pubic symphysis x 2)
- length of supraternal notch to the pubic symphysis x 3
- (Base of skull to coccyx) / 0.44
- Olecranon process to the tip of the middle finger x 19/5
- Length of head x 8
____ is a verbal, accurate, and picturesque description of the person identified provided by the witness, relatives or other persons acquainted with the person
Portrait parle (spoken picture)
Distance at which the best known person cannot be recognized by the clearest moonlight.
16 to 17 yards or 15 to 16 meters
Starlight: 10-13 yards or 9-12 meters
Fingerprints are formed in the fetus on the ____ month of pregnancy
4th month
Dactylography vs Dactyloscopy
Dactylography - art and study of recording fingerpritns as means of identification
Dactyloscopy - art of identification by comparison of fingerprints. Study of utilization of fingerprints
Poroscopy - study of pores found on the papillary or friction ridges
Name the substances used to make latent prints available
Graphite for spraying, aluminum powder, plaster of paris, copper powder, metallic antimony
A type of signature forgery accomplished without outline
simulated forgery
Spurious forgery - one prepared primarily in the forger’s own handwriting wherein little or no attempt has been made to copy the characteristics of the genuine writing
[Age of Scar]
brownish or coppery
2 to 6 months
[Age of Scar]
white, glistening, contracted and tough
> 6 months
[Anthropometrics]
____ devised a scheme utilizing anthropometrical measurement as basis of identification
Alphonse Bertillon
[Anthropometrics]
human skeleton is unchangeable after the ___ year
20th
What is the most valuable method of identification?
fingerprinting
Fingerprints are formed during ___ months AOG
4th month
[Fingerprinting]
The art and study of recording fingerprint as a means of identification
Dactylography
[Fingerprinting]
art of identification by comparison of fingerprints
Dactyloscopy
[Fingerprinting]
study of pores found on the papillary friction ridges of the skin for purposes of identification
Poroscopy
[Fingerprinting: Kinds of Impression]
Impression of finger bulb with the use of printing ink on the surface of the paper
Real
[Fingerprinting: Kinds of Impression]
Impression made by chance and is visible without previous treatment
Visible print
[Fingerprinting: Kinds of Impression]
pressing the fingertips on melted paraffin, putty, resin
Plastic print
[Fingerprinting: Kinds of Impression]
not visible after impression but made visible by addition of some substances
latent print
[Types of fingerprint patterns]
Ridges go from one side of the pattern to another, never turning back to make a loop
Arches
[Types of fingerprint patterns]
One or more ridges enter on either side, recurves and terminate or tend to terminate on the same side
Loops
[Types of fingerprint patterns]
two deltas and patterns too irregular in form to classify
Whorls
[Temporary teeth]
Central incisors, upper teeth erupt at ___
7 months
Lower teeth central incisor - 6 months
[Temporary teeth]
Late incisors erupt at
9 months
Lower teeth lateral incisors - 10 months
[Temporary teeth]
canine erupt at
18 months
[Temporary teeth]
First molar erupt at
2 years old
[Permanent teeth]
First molar
6 years old
[Permanent teeth]
Central incisors
7 years old
[Permanent teeth]
lateral incisors
8 years old
[Permanent teeth]
first bicuspid
9 years old
[Permanent teeth]
second bicuspid
10 years old
[Permanent teeth]
canines
11 years old
[Age approximation]
12 permanent teeth (8 incisors and 4 molars)
9 years old
[Age approximation]
initial calcification of the 3rd molar
8 to 10 years old
[Age approximation]
20 permanent teeth
11 years old
[Age approximation]
28 permanent teeth, no decidous teeth
13 years old
[Age approximation]
the root ends of the 3rd molar completely calcified
25 years old
___ science of handwriting analysis
bibliotics
___ study of handwriting for the purpose of determining the writer’s personality, character, and aptitude
Graphology
What are the classification of signature forgery
- Traced
- Simulated
- Spurious
[Identification of human skeleton]
Bones used to measure height
- Femur
- Humerus
- Tibia
- Radius
[Identification of human skeleton]
Bones used to determine sex
- Pelvis
- Skull
- Sternum
- Femur
- Humerus
[Male/Female]
Pubic arch that is narrow and less round
Male
[Male/Female]
obturator foramen is egg shape
Male
[Male/Female]
the mastoid process is larger
male
[Male/Female]
The styloid process is longer and slender
Female
[Male/Female]
superciliary ridges are less sharp and more rounded
Male
All soft tissues in a grave disappear within ___ months
12 months or 1 year
Age exempted from criminal liability
<9 years old
Over 9 years and under 15 unless he has acted with discernment
Age may be determined by?
- Appearance of ossification centers
- Union of bones and epiphyses
- Dental identification
- Obliteration of cranial sutures
[Test for blood tissue]
recent bloodshed is soluble in saline and imparts a bright red colir
solubility test
[Test for blood tissue]
imparts muddy precipitate
heat test
[Test for blood tissue]
bluish white luminescence is a positive sign for blood. it is due to ___
hematin
[Test for blood tissue]
brownish tinge due to the alkaline hematin
Saline Extract + ammonia
[Test for blood tissue]
blue color as sign of positive test; but not conclusive
Benzidine test Guaiacum test (Van Deen Dyas or Schombein test)
[Test for blood tissue]
Kastle-Meyer test refer to
Phenolphthalein test
[Test for blood tissue]
Considered to be the best of the microchemical test
Teichmann blood crystals or Hemin crystal test
[Test for blood tissue]
determines whether blood is of human or not
Precipitin test
Menstrual blood contains large number of non-clotting, acidic blood called___
Deoderlein bacilli
What act defined death as cessation of cardiopulmonary functions and/or cessation of brain activity?
Organ donation act of 1991
___ sum total of all the vital processes by which the physical integrity of the body is maintain
life
[Death]
deep, irreversible absence of electrical brain activity
brain death
[Death]
molecular death happens ___ hours after cessation of vital functions of he body
3-6 hours
[Signs of death]
____ test ligature is applied around the base of a finger with moderate tightness
Magnus test
[Signs of death]
___ test is the injection of a solution of fluorescein subcutaneously
Icards test
[Signs of death]
____ test wherein the fingers are spread wide and the finger webs are viewed through a strong light
Diaphanous test
[Signs of death]
____ test
movement of the image formed by reflecting artifical light on the water or mercury contained in saucer
Winslow test
___ mortis is one of the most prominent signs of death
Algor mortis
Post mortem caloricity or the rise in temperature of the body __ hours after death
First 2 hours
[Factors influencing the rate of cooling of the body]
Factors that delay cooling (connected with the body)
- Acute pyrexial disease
- Sudden death in good health
- Obesity
- Asphyxia
- Middle age
[Factors influencing the rate of cooling of the body]
factors accelerating cooling (connected with the body)
- Leanness
- Extreme age
- Long standing or lingering illness
- Chronic pyrexial disease associated with wasting
[Factors influencing the rate of cooling of the body]
factors that are connected with the surroundings that delay cooling
- Clothing
- Want of access of air
- Small room
- Warm surroundings
[Factors influencing the rate of cooling of the body]
factors that are connected with the surroundings that accelerates cooling
- Unclothed
- Conditions allowing the access of air
- Large room
- Cooling more rapid in water
[Factors influencing the rate of cooling of the body]
During the first hour of death, the body temp drops to ___
half the difference of the body temp and that of the air
[Factors influencing the rate of cooling of the body]
2 hours after death, the body temperature falls
1/2 of the previous rate
[Factors influencing the rate of cooling of the body]
Body attains temperature of the surrounding air after -__ hours of death
12 to 15 hours
[Factors influencing the rate of cooling of the body]
What is the formula to estimate the duration fo death?
Time = [(normal tem) x 38.89 deg C - rectal tem ] / 1.5
[Changes in the body following death]
Starts immediately after death,
extremely flexed, lower jaw falls and the eyeball loses its tension
Stage of primary flaccidity
[Changes in the body following death]
In tropical countries, rigor mortis happens
24-48 hours during cold weather
18 to 36 hours during summer
[Changes in the body following death]
in Rigor mortis, what compounds in the body increases
- Lactic acid
2. phosphoric acid
What are the internal factors influencing the time of onset of rigor mortis?
- State of the muscle (longer in healthy and at rest before death)
- Age (early onset in newborn and elderly)
- Integrity of the nerves
What are the external factors influencing the onset of rigor mortis
- Accelerated in high temp, stiff if above 75 deg C
2. Short in moist air
[Cadaveric spasm vs Rigor Mortis]
involves certain muscles or group of muscles only which happens immediately after death
Cadaveric Spasm
what are the organism usually involved and seen in secondary flaccidity?
- Clostridium Welci
2. C. perfringes
[Ante- or Post-mortem clot]
firm, cannot be stripped into layers, uniform color
ante-mortem
[Ante- or Post-mortem clot]
soft, smooth and healthy after the clots are removed, stripped off in layers
post-mortem
[Post-mortem lividity]
blood gravitates to the most dependent portions but still inside the BV in fluid form
hypostatic
[Post-mortem lividity]
Appears during the later stages when blood has coagulated inside the blood vessel
diffusion
[Post-mortem lividity: Color]
Dark
asphyxia
[Post-mortem lividity: Color]
bright pink
CO
[Post-mortem lividity: Color]
Less dark
hemorrhage, anemia
[Post-mortem lividity: Color]
bright red
hydrocyanic acid or Prussic acid
[Post-mortem lividity: Color]
dark brown
phosphorous
[Post-mortem lividity: Color]
chocolate or coffee brown
Potassium chlorate, Potassium dichromate
[Autolytic changes after death]
breaking down of the complex proteins into simpler components
putrefaction
[Autolytic changes after death]
What is the color and location of the earliest sign of death in the skin
Greenish, right iliac fossa
[Autolytic changes after death]
Prominence of the superficial veins with reddish discoloration
marbolization
What is the order of putrefaction when the body is in water
- Face and neck or sternum
- Shoulders
- Arms
- Abdomen
- Legs
[Factors that influence the floating of body in water]
What is the role of age
- well-nourished newly born float rapidly
[Factors that influence the floating of body in water]
What is the role of sex
women float sooner
[Factors that influence the floating of body in water]
What is the role of obesity
obese persons float sooner
[Factors that influence the floating of body in water]
What is the influence of the season of theyear
moist air in the summer accelerates floating of the body
What is the optimum temperature for decomposition?
70 to 100 deg F or 21 to 37.38 deg C
Decomposition does not occur at this temp
Below 32 deg F or 0 deg
Above 212 deg F or 100 deg C
What is the effect of clothing in putrefaction
Initially hastens it then protects it later from flies and other insects
[Putrefactive Changes in tropical regions]
Rigor mortis all over
hypostasi
green discoloration over the caecum
12 hours
Onset is 2-3 hours after death
[Putrefactive Changes in tropical regions]
Rigor mortis absent
Green discoloration over the whole abdomen
Abdomen distended with gases
24 hour
Post-mortem lividity 3 to 6 hours after death
[Putrefactive Changes in tropical regions]
Ova of flies seen, trunk bloated
48 hours
[Presumption of death]
disappearance of a person for __ years, not for the purpose of succession
7 years
if for inheritance, 10 years
recently, its down to 4 years
[Presumption of death]
person is dead after ___ years of being missing or unheard off from plane crash, lost in sea voyage, explorer, go into war
4 years
recently, its 2 years
[Presumption of survivorship]
if both are under age 15,
older is presumed to have survived
[Presumption of survivorship]
if both were above the age 60,
the younger is presumed to have survived
[Presumption of survivorship]
if one is under 15 and other above 60
Age 15 is presumed to have survived
[Presumption of survivorship]
if both are over 15 and under 60, but different sexes
male is presumed to survive
[Presumption of survivorship]
if both are over 15 and under 60, same sex,
the older is presumed to survive