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FRSC 550 Forensic Anthro Final
Final Exam
155
Other
Graduate
10/27/2019

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Cards

Term
What is the term for the difference between the sexes
Definition
sexual dimorphism
Term
What is the most sexually dimorphic bone in the body?
Definition
The pelvis
Term
When do the male vs female traits begin to show in the skeleton?
Definition
Puberty
Term
What is the difference between sex and gender?
Definition
sex is biological (xx/xy) and gender is cultural
Term
What is the greatest difference between the female and male pelvis in humans?
Definition
The female pelvis is more wide for birth
Term
How accurate is sex determination based on the pelvis?
Definition
96% accurate
Term
What is the Q angle and what is its significance in sex determination?
Definition
The Q angle is the angle where the femur meets the tibia at the knee. This angle is typically greater for females
Term
What are the three Phenice pubic traits looked at in sex estimation?
Definition
The ventral arc, sub-pubic concavity, and the medial aspect of the ischiopubic ramus
Term
True or False: The skull I snot especially reliable in sex estimation.
Definition
True
Term
What is the second most common method of sex estimation?
Definition
Metric sex estimation
Term
Is the septal aperture more common in males or females?
Definition
Females
Term
Where do men's bones tend to ossify first in the ribs?
Definition
Toward the edges of the costal ribs
Term
Where do women typically experience ossification in rib bones first?
Definition
Toward the center
Term
What are some sexually dimorphic traits found in humans?
Definition
Pubic dimorphism, the Q angle, certain diseases appear more often in certain sexes, presence of septal aperture, costal cartilage ossification sites, frontal hyperostosis is more common in females
Term
What is more accurate when estimating sex, the postcranial skeleton or the skull?
Definition
postcranial skeleton, specifically the long bones
Term
Why is estimating sex in subadults generally considered unadvisable?
Definition
There are no widely validated methods available and most of the morphological changes take place during puberty
Term
After what age are sex estimates considered to be reliable?
Definition
After age 14. Before that they are not considered reliable
Term
How accurate must be sex estimation methods be to be considered reliable?
Definition
over 80%. Less than 80% accuracy is typically considered unreliable
Term
What is the carrying angle?
Definition
The angle at which the upper and lower porting of the arm articulate (the humerus with the radius and ulna)
Term
What does closed population mean in mass fatalities mean? Give an example
Definition
Where there is a known number of people. Example: Plane crash where there is a manifest
Term
What does open population mean in mass fatalities mean? Give an example
Definition
When the number of people is unknown. Example would be the world trade center or a natural disaster.
Term
Name a disaster response organization.
Definition
Disaster Mortuary Operational Response Team (DMORT), National Disaster Medical Systems (NDMS)
Term
What is DMORT responsible for?
Definition
They are the Disaster Mortuary Operational Response Team, and are responsible for victim identification and mortuary services
Term
What is the Frye rule?
Definition
Determining admissibility of evidence base on 'has the principle gained general scientific acceptance'
Term
What does the Federal Rules of Evidence 702 say?
Definition
If scientific, technical, or other specialized knowledge with assist the trier of fact to understand the evidence or determine a fact in issue, a witness qualified by knowledge, skill, experience, training, or education may provide an opinion
Term
What are the Daubert Guidelines?
Definition
Has the technique been tested using the scientific method, has the technique been subject to peer review, what are the known or potential error rates, are there applicable professional standards, is the technique generally accepted within the relevant scientific community.
Term
What is practitioner error?
Definition
It is the mistakes people make
Term
What is instrument error?
Definition
It is the difference between and instrument's measurement value and the true value
Term
What is statistical error?
Definition
sample size versus poplulation
Term
What is technique (method) error:
Definition
The limitations of a technique, may be a function of overlapping traits among groups, uncontrollable, sometimes it will just be wrong
Term
Define reliablity
Definition
The repeatability and consistency of observations
Term
Define validity
Definition
How accurately the results describe the real world
Term
Define error
Definition
the difference between an observed value or measurement and the true value
Term
What is thermography?
Definition
It is the detection of heat due to differences in density in soils, indicating a possible grave
Term
What is significant about amelogenin?
Definition
It is a protein that shows differences in the X and Y chromosomes and allows for sex determination
Term
What are Ancestry Informative Markers?
Definition
Allele frequency differences related to geographical origin and often related to skin and hair pigment
Term
When were the federal rules of evidence established?
Definition
1972 and revised in 2000
Term
What is a positive ID?
Definition
Visual recognition, Anti/Post Mortem comparison, DNA
Term
What is circumstantial ID?
Definition
Cultural, tattoos, clothes, ID
Term
Define Ancestry
Definition
geographical region of ancestral origin
Term
What is a gradient or continuum of a given trait across geographic space or environment?
Definition
Cline or clinal distribution
Term
What is admixed?
Definition
mixed raced (i.e. Kaladin)
Term
What is positive assertive mating?
Definition
mating between individuals of similar groups (i.e. same race couples)
Term
What are two methods to determine ancestry?
Definition
The Optimized Summed Scoring Attributes (OSSA), Decision Tree Modeling
Term
What is the major difference between the OSSA and the Decision Tree Model
Definition
The Decision tree model can distinguish between white, black and Hispanic, the OSSA only white and black
Term
What area of the skeleton is most used for ancestry estimation?
Definition
The cranium
Term
Shovel-shaped incisors are noted to be more common in what ancestral groups?
Definition
Asian and Asian descended ancestral gropus
Term
Are dental approaches considered sufficient for the estimation of ancestry?
Definition
no
Term
Define Age of Majority
Definition
the age to be legally considered an adult
Term
Why might biological age be different from chronological age?
Definition
Chronological age is how many years old you are. Biological age is dependent on a variety of factors that can impact the age of your bones (i.e. diseases, fractures, use, etc.)
Term
What is the difference between biological age and chronological age widening as people get older called?
Definition
trajectory effect
Term
In forensic anthropology what constitutes a juvenile (subadult)
Definition
ages during the growth and development process: embryonic, fetal, infant, child, and adolescent periods
Term
In forensic anthropology what constitutes an adult?
Definition
Those ages occurring during the mature degenerative stage of skeletal change
Term
In forensic anthropology what constitutes an adult?
Definition
Those ages occurring during the mature degenerative stage of skeletal change
Term
When is the growth and development of the skeleton considered complete?
Definition
When all permanent teeth have erupted and all epiphyses have fused
Term
True or False: dental development is more highly correlated with chronological age than bone development.
Definition
True
Term
What is the neonatal line and what does it signify?
Definition
It is a dark line seen in histological sections of the teeth and is present on all deciduous teeth and often the first permanent molar. It possibly signifies live birth.
Term
What is the best documented area of the skeleton for adult age estimation?
Definition
Pubic symphysis
Term
What is the most common method for estimating adult age from the pubic symphysis?
Definition
Suchey-Brooks method
Term
True or False: Cranial suture closure patterns have been shown to correlate very well with chronological age.
Definition
False, however, complete suture closure and obliteration is generally indicative of more advanced age.
Term
What is osteoarthritis?
Definition
Mechanical degradation of the joints
Term
What is osteoporosis?
Definition
increase in bone porosity, or decrease in bone mineral density
Term
Define canalized
Definition
development along a predictable growth channel or pathway despite external factors
Term
What 3 tools are used in taking measurements for osteometrics?
Definition
sliding calibers, spreading calipers, and osteometric board
Term
What is the last ephiphyseal union?
Definition
The iliac crest and sternal end of clavicle, age 25-30
Term
What did Hartnett (2010) do in her article?
Definition
reassessed the method of pubic symphysis age estimation method due to modern changes. Added a 7th stage.
Term
Why is stature estimation possible
Definition
There is a relationship between an individual's skeletal dimensions and their height
Term
True or False: The femur is the most accurate in stature estimations because is contributes most to stature, followed by lower leg bones and the arm bones.
Definition
Term
What is more accurate in determining stature, the lower or upper limbs?
Definition
lower limbs
Term
What is kyphosis?
Definition
over-curvature of the thoracic vertebrae
Term
What are regression stature estimation methods?
Definition
methods of estimating stature that involve taking bone measurements and inserting them into regression formulae that represent the mathematical relationship between that measurement and height for a given population.
Term
What is secular change relating to stature?
Definition
A change in the average pattern of growth or development of a population over time.
Term
What are the four categories of individual skeletal variations?
Definition
Normal anatomical variation, skeletal anomalies, pathological conditions, changes related to repetitive activity
Term
define antimere
Definition
the same bone or tooth from the other side
Term
What is polydactyly?
Definition
having extra fingers or toes
Term
What is a hemivertbrae?
Definition
an extra partial vertebrae
Term
What is it called when a vertebra take on the characteristics of another segment of the spine?
Definition
vertebral shift
Term
Where is the septal aperture located and who does it most likely occur in?
Definition
It is located by the trochlea on the humerus and occurs most frequently in females
Term
What is a hole in the sternum called?
Definition
A sternal foramen
Term
Define pathology
Definition
The study of disease
Term
Define pathological condition
Definition
the abnormal anatomy, which is the manifestation of a disease process
Term
Define proliferative lesion
Definition
the excess deposition of bone
Term
Define lytic (osteolytic) lesions
Definition
The loss of bone
Term
Define deformative lesions
Definition
changes the overall bone shape
Term
Define osteomyelitis
Definition
infection of the bone
Term
Define osteosclerosis
Definition
Increase in bone density
Term
What causes proliferative lesions
Definition
They are a result from increased osteoblastic activity as a reaction to a disease
Term
Define osteitis
Definition
inflammatory processes affecting the inner bone structures and the medullary cavity
Term
Define osteophytes
Definition
bony projections that form at the margins of joints and signify joint damage
Term
Define heterotopic ossification
Definition
connective tissue that became ossified in response to trauma by producing bone directly in the tissue
Term
Define Enthesophytes
Definition
bony projections that form at the site of ligament or tendon attachments
Term
What are primary neoplasms
Definition
tumors of bones that arise primarily in bone
Term
what is avascular necrosis
Definition
collapse or destruction of the joint surface due to disrupted blood supply.
Term
Define secondary neoplasms (metastatic tumors)
Definition
tumors that arise in other parts of the body and spread to the bone. Much more common than primary neoplasms
Term
What is osteoporosis?
Definition
condition of lower than normal bone density
Term
Define lordosis
Definition
abnormal degree of the inward curve of the lower spine resulting in a saddleback appearance
Term
Define Kyphosis
Definition
too much concave curvature of the thoracic spine resulting in a hunchback appearance
Term
What is scoliosis
Definition
the lateral deviations of the spinal column from the midsagittal plane
Term
What is osteomalacia?
Definition
inadequate bone mineralization cause by insufficient calcium and phosphorus which results in softening of bones due to defective mineralization.
Term
What is rickets
Definition
significant owing of the long bones in children
Term
What is craniostenosis
Definition
premature fusion of the cranium sutures resulting in significant cranial deformation
Term
What is hydrocephaly
Definition
accumulation of fluid in the ventricles of the brain causing an enlargement of the skull and a small face
Term
What are "markers of occupational stress"?
Definition
repeated mechanical stresses that cause the bone to adapt their morphology in response to these stresses
Term
Define eburnation
Definition
degenerative condition that results in bone being hard and ivorylike
Term
In anthropology what does alteration refer to?
Definition
Any change to the physical properties of bone
Term
In anthropology what does trauma refer to?
Definition
the physical disruption of living tissues by outside forces
Term
In anthropology what does perimortem refer to?
Definition
around the time of death, when bone was in a biometrically fresh state
Term
Define stiffness
Definition
The ability to resist deformation
Term
Define compression
Definition
shortening force
Term
Define tension
Definition
elongation or stretching force
Term
define bending force
Definition
one side the concave side is subject to compressive force while the other side is subject to a tensile force
Term
define shear force
Definition
slide portions of the bone relative to another (opposite)
Term
What is torsion force
Definition
twisting, involves combination of shear and rotation
Term
True or False: Bone is stronger under compression than in tension
Definition
Term
What does magnitude refer to?
Definition
The amount of force applied
Term
What is dynamic loading
Definition
force that is applied suddenly and at relatively high speed
Term
What type of loading is most often responsible for fractures seen in a forensic context?
Definition
dynamic loading
Term
define static loading
Definition
low speed force applied slowly
Term
How are creep fractures formed
Definition
static force applied over an extended period of time
Term
how are fatigue fractures formed
Definition
repeated loading at pre-failure, which degrades the mechanical properties of bone and causes small cracks
Term
Materials that have the same properties in all directions are called [blank]
Definition
isotropic
Term
materials that have different properties in different directions is called [blank]
Definition
anisotropic
Term
Is bone isotropic or anisotropic?
Definition
anisotropic
Term
What is the difference between an incomplete and complete fracture?
Definition
Incomplete fractures are those where some continuity is retained between the fractured bone portions
Term
In butterfly fractures, from where does the force come from?
Definition
The opposite of the point
Term
What is the biggest indicator that trauma is antemortem?
Definition
osteogenic reaction
Term
What are the stages of fracture repair?
Definition
bleeding occurs and a hematoma forms. inflammation occurs and osteoclasts work to resorb the dead bone. The second stage is the reparative stage where osteoblasts form a fracture callus. The third is the remodeling stage which occurs months to years following the fracture and involves the remodeling of the quickly deposited bone for the fracture callus
Term
What is it when all teeth have been lost with complete resorption of the alveolar space?
Definition
edentulous
Term
What is trephination
Definition
a hole in the skull which what an ancient medical practice
Term
In anthropology what does damage refer to?
Definition
Postmortem changes to bone
Term
How do postmortem fractures look different than perimortem fractures?
Definition
Postmortem bone is dry where fresh bone is moist and thus they break differently
Term
What is blunt force trauma?
Definition
relatively slow load over a large surface area, indicative of radial and concentric fracture patterns
Term
In falling deaths, what may be an indicator for suicide versus accidental or a push
Definition
Suicide will have a more horizonal break pattern where the others will have a more vertical break pattern
Term
what is high velocity projectile trauma
Definition
rapid applied force over a small surface area. Indicated by beveling on opposite side of force
Term
What does a keyhole defect indicate
Definition
A tangential path
Term
What is the primary evidence of antemortem trauma?
Definition
Osteogenic reaction (formation of new bone)
Term
What characteristic has been noted to indicate manual strangulation?
Definition
Hyoid fracture
Term
What is a hangman's fracture?
Definition
Bilateral fracture of the pedicles of C2
Term
How can you tell the difference between knife and saw sharp force trauma?
Definition
The knife forms a triangle groove where the saw's is rectangular, known as a kerf
Term
What is the pugilistic posture?
Definition
Fire or extreme heat causes the loss of moisture in the muscles and ligaments, which causes them to contract. The body shifts to the arms curled to the face and legs bent
Term
What is a retort?
Definition
The furnace where cremains are made
Term
What is primary blast trauma?
Definition
trauma from barometric changesĀ  from the blast wave
Term
what is secondary blast trauma?
Definition
blast trauma from the shrapnel
Term
what is tertiary blast trauma?
Definition
trauma from falling objects or body being thrown into objects
Term
what are the 5 manners of death?
Definition
homicide, suicide, accidental, natural, unknown
Term
What is the process of linking an unknown personal object or material to an individual or known identity?
Definition
personal identification
Term
Who has legal authority over a body?
Definition
The medical examiner or coroner
Term
What is the most common identification comparison technique?
Definition
Radiographic comparison
Term
What is fractography and how is it beneficial to forensic anthropologists
Definition
It is the study of fracture patterns and allows forensic anthropologists to see the direction of force based on how a bone breaks
Term
What is craniofacial superimposition?
Definition
it is the superimposition of a photograph or video of an known individual with the skeletal remains and may be used if no other antemortem data are available.
Term
What Is the likelihood ratio?
Definition
p correct ID / P incorrect ID, basically a function of how common the particular matching feature is in the population at large.
Term
What is am artistic reproduction of the soft tissue features of an individual?
Definition
Facial approximation or facial reconstruction
Term
What are the two methods of facial approximation?
Definition
the anatomical method and the tissue depth method
Term
Of the two facial approximation methods, which is more commonly used?
Definition
The tissue depth method
Term
What is a loci?
Definition
Locations of particular DNA sequences on a chromosome
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