Is it possible to obtain a PhD in Canada without having to attend courses for a master degree? I am used to European university system and I don't know much about how things are working overseas.

I already hold a Bachelor degree and a Master degree. I will soon be looking for a PhD. If I am not mistaken, in the USA, someone directly jumps from a Bachelor degree to graduates studies which include a Master degree + a PhD, is it correct? Is it also the way it works in Canada (Vancouver, UBC)? Is it possible to make a PhD in Canada without having to take time for the Master degree? 

I read somewhere that a Canadian PhD last between 4 and 7 years. Does it include the Master degree? If yes, how much time does the PhD only represents?
Canada is different from the USA, in that direct entry for a PhD after a bachelors degree is rare. The typical path is a bachelors, followed by two year masters, followed by four to five years for a PhD. 

As far as I know, no typical Canadian PhD program also grants a masters, as in Canada, it's sort of implied that you already had one going into the PhD. 

This is of course, based on my understanding of the sciences: Humanities and Engineering may vary. 

EDIT: One note about courses: Course requirements vary dramatically from program to program, university to university. Some will require relatively few courses, others, many more.