so what compund exercises work tripes and what work biceps?
do you only work chest shoulder back and legs ?
I don't train in terms of muscle groups. I train push/pull. That training style focusses on balancing compound movements for every direction the body can push/pull objects. You can train every muscle in the body (several times over) by using six basic lifts.
Currently, I'm on a volume program I put together. It's a 4-day split:
(1.) Lower Push/Calves
(2.) Upper Horizontal Push/Vertical Pull
(3.) Lower Pull/Calves
(4.) Upper Vertical Push/Horizontal Pull
*aside from calves, there are no isolation movements
I don't think I'm going drop doing bicep curls or hammers. Hammers for sure not. They help form that outer muscle. Plus I like doing them.
Just like how you can't isolate an upper, lower, mid, outer, inner chest, you can't isolate the outer or inner biceps. Certain movements can't place a slight more emphasis on certain regions, but ultimately lifting variation provides only a new stimulus for general strength and development.
For instance, if someone trained chest with nothing but incline bench for years it's not as though they would develop odd muscle lumps at the top of their chest. The whole chest would develop; it might just be a slight bit stronger higher above.
Anyway, if you enjoy training biceps with a neutral grip for the added emphasis on the brachialis, why not go for neutral grip pullups, dumbell unilateral bench rows, close-grip BB rows, close-grip V-bar chins, etc?
You could also experiment with your deads and use a hex-bar so that you're gripping neutral. Many people fail to acknowledge how involved the arms are in deadlifts. Even in squats your arms are having to do some stabalizing.
Also, another overlooked lift with secondary benefits for the arms -- particularly forearms -- are hang cleans. I'm not kidding, give them a go and watch the blood fill them to the point of popping like a baloon. I made a hang clean PR last night and directly had to go to bent-over BB rows. I thought my forearms were going to burst.