Group 5 Flashcards
patterns created from the force of gravity
Passive Bloodstain
drop, series of drops, flow patterns, blood pools
Passive Bloodstain
created/formed by the force of gravity acting alone
Passive Drops
results from blood dripping into blood
Drip Pattern
change in the shape and direction of bloodstain due to the influence of gravity or movement of the object
Flow pattern
formed when a source of blood is stationary for period
Pool Pattern
patterns occur when force is applied to the source of blood includes low, medium, high impact spatters
Projected Bloodstain
result of dripping blood after a victims sustains an injury such as stab or some cases of puch
Low impact spatters
caused by blunt force such as baseball bat or intense beating
Medium impact spatters
Examples: spatt or resulting from gunshot
High impact spatters
pattern are created when wet, bloody object comes in contact with a target surface
Transfer Bloodstain
used to identify object or body part
Transfer Bloodstain
creating action of bloodstain but cannot determine single direction of movement for whole stain
Smudge/s mear
created from an object moving through bloodstain
Wipe pattern
created from an object leaving bloodstain
Swipe pattern
determine presence of blood
Preliminary Test
confirm stain is really blood
Confirmatory Test
determine if the blood is human or animal origin
Precipitin Test
determine blood group of blood
Blood Grouping
Benzidine Test color reaction?
Intense blue
Phenolphthalein Test (Van Deen’s/Schombem’s Test)
Deep permanganate
Leucomalachite Green Test color reaction?
Bluish-green
circular,biconcave dise without a nucleus
Mammals
oval, nucleated, nucleus is oval
Fishes, reptiles, amphibious animals
Dark brown rhombic crystal of hemin/hematin chloride
Teichmann Test/ Hemin Crystal Test
arranged singly/ in clusters
Teichman Test/ Hemin Crystal Test
large rhombic crystals with salmon pink color
Takayama (Haemochromogen test)
arrange clusters/ sheaves
Takayama (Haemochromogen test)
small & dark dichroic acicular crystals made of acetone
Acetone Hemin/ Wazenhaar Test
used distinguish between mammalian, avian, piscine, reptilian blood
Microscopic Test
method of analytical chemistry uses study small samples of substances
Microchemical Test
done to detect precipitin, reacts to human blood form precipitate, human blood contains precipitin
Test to determine of blood is of human origin
has several types
Parentage Test
Procedure which blood is given to patient through an intravenous (IV) line in one of the blood vessels
Transfusion
Recipient: O, A, B, AB
Donor: O
Recipient: A, AB
Donor: A
Recipient: B, AB
Donor: B
Recipient: AB
Donor: AB
Universal Donor
O
Universal Recipient
AB
receives the RBC of any other blood
Universal Recipient
they have no agglutinogen & can donate blood to any other person
Universal Donor
Percentage of blood group among Filipinos
A -
B -
O -
AB -
26.3%
24.7%
43.3%
5.7%
acting on blood (without body’s influence) as soon as it exist the body
Gravity
amount of internal friction in fluid and describe resistance of liquid to flow
Viscosity
force gives ability to blood to maintain its shape
Surface Tension
When two fluids are in contact with each other (blood/air) there are forces attracting all molecules to each other
Surface Tension
