Blood Flashcards
What do blood stains tell investigators
who was at the crime and what might have happened.
If crime-scene investigators
believe that there may have been blood around,, what do they do
around, the area is treated with
a fluorescent chemical such as luminol, which makes the blood visible
under ultra violet light.
waht makes blood visible under ultra violet ight
fluorescent chemicals like luminol
How will the shape and size of blood differ
depending on the height and
direction from which blood falls
when do arc blood splatters form
when the victim pulls
away from an impact.
what does the number of arcs tell us
how
many impacts there were and can tell if
the assailant was left- or right-handed.
types of blood
Blood type A, B, AB or O
blood can be classified according to
the antigens located
on the surface of the red blood
cells, and the antibodies found
in the plasma.
Blood group A contains what kind of antigen and what type of antibody in the plasma
A antigen and Anti-B
Blood group B contains what kind of antigen and what type of antibody in the plasma
B antigen
Anti-A
Blood group AB contains what kind of antigens and antibodies in the plasma
A and B antigens
No antibodies
Blood group O contains what kind of antigen and what type of antibody in the plasma
No antigens
Anti- A and Anti- B
example of class characterisitcs
blood because it is associated with a
group of people all having the same characteristic (i.e. same blood group).
3 categories of blood splatters
Passive blood splatter
transfer blood splatter
projectile blood splatter
types of passive blood splatters
blood pool
blood trail
blood droplets
