Ramsey was one of five Welsh players to make the squad and will now join up with his team-mates to prepare for group games against Senegal, Uruguay and the United Arab Emirates.
And the 21-year-old says he is looking forward to taking part in the Olympics and gaining the support of a partisan home crowd.
"I'm delighted to be a part of it," he told Arsenal's official website.
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"I haven't played under Stuart Pearce before so that is something to look forward to as well. And looking at the squad of players we have I think we have a lot of quality in there.
"Now we need to work together over the next few weeks and get an understanding of each other. If we do that then I'm sure we can do well, especially with home advantage.
"It will be a good experience and a different experience to play in the Olympics, being part of a British team and playing alongside some of the English players too.
Ramsey made his debut for the Welsh national team back in 2008, a year after Manchester United midfielder Ryan Giggs retired from international football.
And the Arsenal starlet is relishing the chance to play alongside such a prestigious icon of the Welsh game.
"And of course Ryan Giggs will be there too. He retired from international football before I got into the Wales team and he's an absolute icon in Welsh football.
"He's done it all and most players would like to play alongside him so hopefully I'll get my chance.
"I can certainly learn from him while I'm with the Great Britain squad."