Chapter 10 Flashcards

1
Q

serology

A

study of bodily fluids left at crime scene

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2
Q

presumptive test

A

highly sensitive but not specific for a particular substance

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3
Q

Confirmatory test

A

test for substance in question and only that substance

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4
Q

blood

A

tissue composed of plasma

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5
Q

3 types of cells in plasma

A

red
white
platelets

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6
Q

Erythrocytes

A

transfers oxygen ans CO2 through body

red blood cells

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7
Q

Leukocytes

A

white blood cells

active in immune system

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8
Q

Platelets

A

fragments of cell, no nuclei and clotting

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9
Q

genetic markers

A

blood group
class of antigens produced by allelic genes
ABOVE

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10
Q

Presumptive tests reacts?

A

with hemoglobin in blood

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11
Q

Presumptive color test

A

hydrogen peroxide reacts with hemoglobin and changed colors

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12
Q

presumptive light emission

A

if area is large

luminal or flourescein

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13
Q

Confirmatory test for blood

A

utilize the formation of crystals with heat and chemicals

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14
Q

Takayama test

A

salmon colored crystals

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15
Q

Species origin

A

Ouchterlony test

antigen reaction between human and human antiserum

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16
Q

Electrophoresis

A

diffusion of antibodies and antigens on electrically charged gel

17
Q

Test for semen

A

Fast blue B
christmas tree stain
Prostate-specific antigen, P30

18
Q

Bloodstain pattern analysis

A

analysis or dispersion, shape, volume, pattern, of blood

19
Q

Angle of impact

A

arc sin kf width/length of stain

20
Q

point of convergence

A

area where directionality of stains converge on surface

21
Q

Point of origin determining types

A

stringing
graphing
trigonometric

22
Q

stringing

A

string to base of stain

23
Q

Trigonometric

A

average of stains is the point of origin

24
Q

Three types of splatter

A

Low
medium
high velocity impact spatter

25
Q

Low impact

A

blunt object not traveling very fast

26
Q

Medium impact

A

faster velocity

27
Q

High impact spatter

A

only gunshot

1000< ft/sec

28
Q

aspirated blood

A

blood with oxygen bubbles