Michigan has some great clinical anatomy questions.
For some reason the direct link doesn't work, but if you go to their website www.umich.edu and do a search on 'medical gross anatomy' you can get to the course homepage that way. Then on the menu on the left, click on the link for 'practice quizzes.' They have it done by regional section (head & neck, thorax, etc.) AND they have both written and practical quizzes, as well as links to University of Arkansas online quizzes as well.
Anyway this should be an awesome place to start. Enjoy!