Photo credit: www.wisegeek.org
You may find the following websites useful.
Get Body Smart
Penn State Anatomy
Anatomy Drill and Practice
Khan Academy
Practical Practice
Inner Body
Mader's Book Site
Bio 221 Rabbit Dissection - there are a series of YouTube videos identifying structures on the rabbit
Baruch Anatomy Rabbit Dissection - there are a series of YouTube videos identifying structures on the rabbit
Virtual Pig Dissection (no muscles)
Fetal pig internal dissection
Fetal Pig Muscle overview
Fetal Pig Muscle Pictures