Difficulties creating a tetmesh

Hello!

I’m trying to mesh a CAD model of the human muscle layer. I’m still a fairly new user so I keep running into errors that I do not know how to solve.

I have tried creating a composite of the surface, meshing surfaces separately, using the power tools and following the topics in this user group to learn more but after multiple tries I still keep running into a wall.

I’m hoping that maybe someone more experienced would have the time to take a look at the model and share some knowledge on how to go about meshing this.

Dropbox link to the model: Dropbox - muscle_unmeshed.cub - Simplify your life

Thanks!
Krislin