_Arterial patterns result from blood
projected into the scene under pressure form the artery or heart. There are
distinctive physical characteristic in the arterial patterns, marked with the
typical bright red color of oxygenated blood, as well as the spiked appearance
of the blood being released under pressure from the breached artery. These
patterns are referred to as arterial spurt, spurting or arterial gushing and
are used interchangeably.