Hi there..
My husband, my daughter (4 years old) and I had our Medicals done through the EMed system a few weeks ago.
Husband and I each had blood tests, and chest X-rays (we are both originally from South Africa), and all three of us had medical examinations. Examination consisted of doctor asking a few questions, checking eye sight, blood pressure, ears, throat, reflexes etc.
I have been involved in two serious car accidents (I'd like to point out I wasn't the driver in either! Once as passenger and once as pedestrian.. ). I gave details of operations as a result of these accidents but they were kind of glanced over, not looked at I'm detail.
As far as I can remember we didn't submit our health records.. Medical results were uploaded onto the visa system a week later. Three weeks later our CO has confirmed receipt of mine and my daughters Medicals, although still waiting for my husband's to clear.. Not sure why it's being held up..
Good luck..