Monday: Chest, Back
Tuesday: Quads, Hams
Wednesday: Biceps, Triceps
Thursday: Shoulders
Friday: Forearms, Low Back, Abs, Calves
I guess this is a good "beach muscle" routine. But if you want to put on size and strength it's very bad.
Chest and Back - You can't do justice to two major bodyparts working them on the same day.
Biceps, Triceps - Arms get their own special day, but we can't find time do deadlift?
Shoulders - By themselves? Nothing else? You're either overtraining them or you have extra time.
Forearms, Low Back, Abs, Calves - Lower back will be worked with deads. Calves on leg day. Abs at the end of whatever workout you choose.
Give back it's own "special day" do deads then, and bi's after.
Major muscle group/minor muscle group. That's how it should be done.
Old saying in BBing. "Take care of the big muscle groups the little ones will take care of themselves."