"Yes," Jahvaris Fulton said.

Prosecutors then called the medical examiner, Dr. Shiping Bao, who completed Martin's autopsy to testify.

Bao explained what an autopsy consists of to the jury. He then described Martin's autopsy in particular.

Bao said Martin didn't die immediately and his heart was still beating after the shot was fired.

"He was still alive.  He was still in pain," Bao said. The defense objected to Bao giving his opinion and Nelson sustained the objection after a sidebar with attorneys.

Bao said Martin was 5 feet 11 inches and 158 pounds when he died. Jurors were then shown a picture of Martin's body when it arrived at the medical examiner's office. Both Sybrina Fulton and Jahvaris Fulton then left the courtroom, but Tracy Martin remained as the photos were shown.

Bao told jurors about the pictures and said other than the gunshot that Martin was healthy. He said Martin had a small abrasion on his fourth and fifth left finger, adding that they could have occurred two hours before the autopsy, during a struggle or after the shooting.

Bao also said there was a zero chance for survival with Martin's gunshot wound.

"His heart was beating until there was no blood left," Bao said. "I believe he was alive for one to 10 minutes."

Bao said Martin was shot from intermediate range, defined as the muzzle being between 0.4 inches to 4 feet away from the target. Bao said the muzzle had loose contact with clothing.

When asked by de la Rionda about the positioning of Zimmerman and Martin, Bao said, "I have no fact and zero opinion."

Defense attorney Don West cross-examined Bao about who helped him with the autopsies, and Bao said two technicians assisted him.

West focused on how Martin's body was transported from the crime scene. Martin's hands were not bagged to preserve evidence as they should be, Bao said. West asked what time the medical examiner's office got to the scene. Bao responded by saying that the office arrived about two hours after the shooting occurred.

West then asked when the ME officer representative left. Bao said he didn't have that information. Bao then said he didn't remember the exact autopsy without his notes and he must rely on his report.

Bao also said the clothing should have been put in a paper bag and not a plastic bag.

"There is no plastic bag other than the bag that carries the body," Bao said, adding if someone from his office put wet clothes in plastic bag, "They'd be fired the next day."

The defense requested to see Bao's notes that he was using from the stand. Bao, getting upset, said they could not see the notes. Nelson ruled that the defense had a right to see the notes and attorneys read through several pages when one attorney laughs.

"Something funny here?" Bao asked from the stand, seemingly offended. West asked Nelson to copy the notes.

"No, you cannot. It's my work," Bao said before Nelson allowed it.

After lunch break, a limited inquiry was held. Bao changed his opinion for how long Martin was alive, originally saying in his November 2012 deposition that Martin was alive from one to three minutes after the shooting.

But Bao added that an autopsy three weeks ago in a "similar case" has changed his opinion about how long Martin may have lived.

Also, in his November deposition, Bao said the marijuana in Martin's body would have had no effect the night of the shooting. Now, however, he says it could have.  Nelson ruled, however, that Martin's previous drug use would still be barred from being brought up at trial.

Before the day began, Sybrina Fulton tweeted, "Day 19 -- I pray that God gives me strength to properly represent my Angel Trayvon. He may not be perfect, but he's mine. I plead the blood of Jesus for healing."

Zimmerman, 29, has pleaded not guilty and says he shot the 17-year-old in the chest to protect himself as Martin reached for his gun during a fight.

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