Because arterial blood is freshly oxygenated, it gives a better reading of Blood Oxygen Levels - venus blood is headed back to the heart/lungs where it will be refreshed.
becayse
Blood Spatter - 2011 is rated/received certificates of: USA:R (Violence)
Dead Reckoning - 2002 Blood Spatter was released on: USA: 2002
Forward spatter is the blood that is ejected out of the exit wound, going the same direction as the bullet. Back spatter is the blood ejected out of the entry wound, traveling against the line of fire and towards the shooter.
arterial blood
Arterial is a reference to the blood in the arteries, as opposed to blood in the veins.
It can mean Arterial Blood Gas.
An arterial bleed, because the blood is flowing at a high rate of speed/pressure.
Blood Spatter - 2011 was released on: USA: 22 October 2011 (Long Beach Art Theatre)
Dexter Blood Spatter 101 - 2006 was released on: USA: 11 December 2006
Arterial Blood is Bright Red