Forensics Flashcards
What is the late arriving beetle that feed on dried cadaver?
HIDE beetle
Which beetle arrives after the flies?
Rove/ CArrion
What is the term for body temperature post mortem?
algor mortis
A Body was found feeling warm and rigid. What is his approximate time since death?
3-8 hours
A Body was found feeling cold and not stiff. What is his approximate time since death?
dead more than 36 hours
A body was estimated to have died between 8-36 hours. What condition would you have found the body?
Cold and stiff
A body dead for less than 3 hours is described as ?
warm and NOT stiff
A soldier in war kills his enemy. What is the manner of death of this enemy?
Homicide
simply the killing of one person by another (can be legal or illegal)
What is the difference between homicide and murder?
Murder is a homicide committed with “malice aforethought.”
Who can legitimately certify death in The US?
forensic pathologist?
What are the 5 manners of death?
- natural
- homicide
- suicide
- accident
- undetermined
THESE ARE THE ONLY MANNERS OF DEATH
Who signs off a death certificate for someone who died of natural causes?
Licensed physician
Who signs off a death certificate for someone who died of anything OTHER than natural causes?
Medical Examiner
also justice of the peace and coroners in certain cases with limited resources
Which systems of the body are most susceptible to ionozing radiation injury?
Hematopoietic
Lymphatic System
- pts receiving cancer therapy require routine CBC to assure that their red cell and white cell count are NORMAL
Pt receiving cancer radiation therapy requires which routine blood test and why?
CBC with diff - pts receiving cancer therapy require routine CBC to assure that their red cell and white cell count are NORMAL b/c radiation injury attacks the hematopoietic and lymphatic system the most
What structures of the body are affected by IONizing radiation EARLY on ?
- Gonads (testis, ovaries)
2. Blood and bone marrow (thrombocytopenia, anemia, lymphopenia)
What structures of the body are affected by IONizing radiation LATER on ?
- muscle
- liver
- BRAIN
- kidney
because these have LOW rate of proliferation
Stabbing and gunshot wounds are considered:
a. manner of death
b. mechanism (immediate)
c. cause of death. (proximate)
C. Cause of death
CAUSES the final pathophysiological event
Hemorrhage and cardiorespiratory arrest are considered:
a. manner of death
b. mechanism (immediate)
c. cause of death. (proximate)
B. Mechanism
final pathophysiological event
A death by lethal injection is considered a ?
Homicide: taking someones life (legal or not)
What significant bruise color can help age bruises?
Yellow = @ 18 hours or older
IN which type of injury is the epidermis injured by friction?
Abrasion
Characterize bleeding in abrasions?
Abrasions OOZE
DOES NOT BLEED PROFUSELY
What type of blunt force injury results in reproduction of the pattern of injury on the body
patterned abrasion
How is nature/ severity of wound affected by time and area?
inversely proportional
BIIGGER area= less severity
Describe what happens to a persons resting metabolic state when they have extensive surface area burns?
HYPERmetabolic state
associated with excess heat loss and increased need for nutritional support
What is the benefit of excision and grafting burn wound?
prevents ORGAN system failure from burn sepsis
pg 427
What are the 3 things that can result from hypothermia?
- heat stroke
- heat cramps
- heat exhaustion
What receptor is deranged from a heat stroke?
RYRI
it regulates calcium and causes muscle contraction and heat production
Direct effects of HYPOthermia are mediated via ______________ and indirect effects are mediated by _____________
- high salt concentrations ( damage cells)
2. circulatory changes (edema and hypoxia)
Most likely to have gangrene with hypo or hyperthermia?
HYPOthermia due to circulatory disruptions from chilled temps
What occurs if pt has sustained contact with electrical current?
Tetanic muscle spasm
can result in chest wall spasm and ultimately death by asphyxxia
What damage can be caused by HIGH voltage injury?
extensive burns
What damage can be caused by LOW voltage injury?
ventricular fibrillation
What type of tissue is extremely vulnerable to ionizing radiation? List examples?
bone marrow, gonads, lymphoid tissue, mucosa of GI
because they have HIGH rate of proliferation
Subintimal fibrosis is a morphologic feature of ______________?
ionizing radiation causing vascular injury
Thrombocytopenia, anemia, marrow aplasia, neutropenia are alll resutls of ACUTE oR CHRONIC radiation?
ACUTE
Fibrosis is a result of ACUTE or CHRONIC radiation?
CHRONIC
What causes the development of ‘second cancers”?
past history of radiation therapy for cancer
Rifling type of a gun is useful when performing an autopsy for?
identifying the type of gun
What is the primary focus when a mass disaster occurs?
safeguarding. : getting live pple safe
Long guns are ________velocity and handguns are ______velocity
HIGH; LOW
Describe an exit GSW of the skull?
not well circumscribed, beveled
The stippling from gunpowder is typical for what type of gunshot?
Intermediate
