Break down the muscular system into parts. Learning is easier if you memorize smaller parts rather than try to learn the entire system at once. For example, you may want to break down the body as follows: upper extremity, lower extremity, trunk and head.
Create flashcards. Draw a picture of the muscle on one side and write the muscle name on the other.
Study pictures of the muscles. Study various pictures of the same section of the body. The variety of drawings will challenge you so you will be forced to learn the muscle names more thoroughly.
Study a dissected cadaver. Having a hands-on learning experience will put the muscles into a 3-D setting so you will be able to better learn exactly where the muscles are located on the body. If you don't have access to a real cadaver, you may choose to use photos of a dissected cadaver instead.
Write the names of the muscles on a blank diagram. Testing your memory will help ensure you are learning the muscles and not just reading the names from the textbook.