The triceps are the largest muscle group in the arm. So, if you want big upper arms, concentrate on working your triceps rather than working your biceps.
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Greg Valentino is second after me..
biceps brachii
There is not a single muscle that rotates the upper arm. The name of the muscle that contributes in rotation of the upper arm is deltoid muscle.
Latissimus dorsi - this is the largest back muscle that runs from the lower back to the upper arm bone. It pulls the upper arm towards the body and acts as an internal rotator of the upper arm.
Skeletal muscle is associated with the upper arm.
The brachialis is a muscle in the upper arm that flexes the elbow joint.
What are the tendon in your arm?
no
Biceps or triceps
where you bored when you posted this question or have you pop you muscle in you left arm
Deltoid
which shoulder muscle allows you to adduct your arm
It depends. But, the triceps are 2/3 of your upper arm.