In Florida's Seminole circuit court Friday, the mother and brother of Trayvon Martin claim that it was Trayvon Martin who screamed for help during a neighbor's 911 call. Amidst the screams, the teen may have also lived up to ten minutes after being shot, according to medical examiner Dr. Shiping Bao.

On February 26, 2012, the late 17-year-old was shot during a fight with the former neighborhood watch volunteer George Zimmerman, who is now being charged with second-degree murder because of the teen's death. Zimmerman pleaded not guilty, asserting that he shot Martin in self-defense. Martin's mother and brother, Sybrina and Jahvaris Fulton, take the witness stand against Zimmerman.

Dr. Bao, the performer of the autopsy, testified before the court that the late teen was shot in the heart by Zimmerman and also said, "There was no chance he could survive." After the gun shot, Martin may have been able to live from one to ten minutes as his heart ran out of blood to pump.

Prosecutor Bernie de la Rionda asked Bao if Martin's brain was still alive.

"Yes," Bao answered.

De la Rionda followed up with another important question: "He can still feel pain in other words?"

"Yes," replied Bao.

According to Dr. Bao, due to the severe wound and from his own experience as a medical examiner, Martin could not have moved. This testimony could cast doubt upon Zimmerman's version of the conflict.

In light of the gunshot wound, the incapacitation, and the pain, it is highly likely that the screams on the background of the 911 call belong to Trayvon Martin.

His mother, showing no emotion, was asked about the screams by de la Rionda. "That scream, do you recognize that?"

"Yes," answered Sybrina Fulton, "it's Trayvon Benjamin Martin."

When first hearing the screams last year, Martin's brother Jahvaris was unsure of the "shocking" screams on the 911 call, saying, "I didn't want to believe it was him."

With the prosecution nearing the end of its case, there is still no witness that saw the start of the fight or the shooting. There still is much speculation and confusion.