ns
PED

APPLY_PED_BLOOD

// 0x83F7E01C7B769A26 0x376CE3C0
void APPLY_PED_BLOOD(Ped ped, int boneIndex, float xRot, float yRot, float zRot, char* woundType);

Found one occurence in re_crashrescue.c4  
PED::APPLY_PED_BLOOD(l_4B, 3, 0.0, 0.0, 0.0, "wound_sheet");

Parameters