The boy, who was 15, may also have been still alive and able to move when he was set alight with petrol after being stabbed, the High Court in Glasgow heard.
Kriss, according to a Glasgow University forensic pathologist, bled to death after being stabbed 13 times in the abdomen, back and arm.
The knife had sliced into his liver, lung, kidney, stomach and intestines, and cut through three major arteries.
A rib had also been cut in half and a wound had gone right through his arm from one side to another, cutting a notch in the bone.
His body had also been extensively burned. The trial heard earlier that petrol was used.
The horrific evidence of how Kriss, 5ft 7in tall and weighing only eight and a half stones, met his death was given by Dr Marjorie Black.
During her evidence, the jury was spared the sight of photographs taken during a post-mortem examination of Kriss’s body.
Daanish Zahid, 20, of Shields Road, Pollokshields, Glasgow, denies that while acting with others, he abducted Kriss in Kenmure Street, Pollokshields, on 15 March. It is alleged that Kriss, of McCulloch Street, Pollokshields, was driven to Strathclyde Park, Motherwell, Dundee, and then to the Clyde Walkway where he was repeatedly stabbed and then set on fire after an accelerant was poured over him in a racially aggravated attack.
The trial before Lord Philip continues.