None of those are relevant to the issue at hand. They would all be the result of the assault of Zimmerman by Martin that has been documented by all the other evidence none of which can be contravened.
All of those are very relevant.
They might have wrestled around a bit but I don’t think Trayvon punched or in any other way ‘assaulted’ Zimmerman.
I believe that clumsy, uncoordinated Zimmerman tripped and caused his own injuries in his rush to detain the ‘suspect’.
Trayvon only injury (besides the fatal gunshot wound) was a scrape to the knuckle of his left ring finger. He had none of Zimmerman’s saliva, DNA, or blood on him . . . expect for a spot or two of Zimmerman’s DNA on his undershirt. Zimmerman probably transferred that when he was attempting to frisk Trayvon.