BPA

what color is oxygen rich blood

red

what color is oxygen poor blood

blue

what is in blood

cells, enzymes, proteins

what does blood do

circulate nutrients and oxygen, removes waste, fights infection,

composition of blood

red/white blood cells, platelets

red blood cells

erythrocytes

white blood cells

leukocytes

where is hemoglobin found

red blood cells

where is DNA located

white blood cells

what is used in precipitation test

serum in rabbits

how do you know a precipitation test is positive for human blood

cloudy

antibodies

proteins secreted by the white blood ceils that attach and destroy antigens

antigens

molecules/cells that react to antibodies

agglutination

clumping of red blood cells

presumptive test for blood

Kastle Meyer test, malachite green, TMB

what kind of evidence are blood stains considered

circumstantial

angle of impact

angle which blood strikes target substance

back spatter

blood directed back towards the source of energy

cast off

blood that is thrown from object in motion

factors that affect blood droplet

texture of surface, height, velocity

passive

formed by gravity

medium velocity droplets

produced with more energy/force than gravity(more that 25 ft/sec)

high velocity droplets

100 ft/sec

what are the six patterns

passive drops, artenal gushes, splashes, smears, trials, pools

what is a fingerprint

pattern transfer from friction ridge skin

when does your fingerprint develop

12 week of fetal devolpement

3 classification of fingerprints

arches 5%, loops 60%, whorls 35%

what are the two types of arches

plain and tented

do arches have deltas

no

plain arch

has ridges enter on one side and exist on the other

tented arches

similar to plain but have spike in center

what does ace-v stand for

analyze, compare, evaluate, verify

fingerprint patterns

black, grey, fluorescent, magnetic

what powder do you use on white surfaces

black

what powder do you use on dark surfaces

grey

what powder do you use on muti colored surfaces

fluorescent

what powder do you use on leather or rough plastic surfaces

magnetic

poison

substance given in body that result in ill health or death

post mortem toxicology

determine substance that contributed to death

types of toxins

phytotoxins, bacteriotoxins, zootoxins

can highly toxic chemicals be lifesaving in appropriate doses

yes

what is toxinology

toxins produced by living organisms which are dangerous to man

what are the 5 types of poisoning

acute, chronic, fulminant, parasuicide, antidote