I have a question reguarding Aquinas' First Way and free will. I understand the First Way from a biological level with the scenerio:

My finger causes the pencil on the desk to move
the muscles in my hand cause my finger to move
my brain causes the muscles to move
the firing of neurons in my brain cause my brain to "move"
ect.

This scenerio makes sense to me. However, and issue of free will arrises in my head with this scenerio.  If we look not just at the biological aspects in this scenerio we can see that:

My finger causes the pencil on the desk to move
the muscles in my hand cause my finger to move
my brain causes the muscles to move
my will causes my brain to "move"
ect.

If then the souce of the motion is an unmoved mover, would I then have no free will, since my will is being moved by another source?