Lift weights.
biceps - front of arms (muscle) triceps - back of arms (muscle) qaudriceps - muscle of thigh
your arms
which trunk muscle allows you to adduct your arms? which shoulder muscle allowed you to adduct your arm? which trunk muscle allows you to elevae your shoulders?
Arms,legs,and theth
Your arms may be skinny but strong because muscle strength is not solely determined by muscle size. Factors such as muscle fiber type, neuromuscular efficiency, and training intensity can contribute to strength without significant muscle mass.
It is the Rubrospinal Tract. It's main role is the mediation of voluntary movement. It is responsible for large muscle moments such as the arms and legs as well as fine muscle movement.
Triceps
Actually, I think yes. Because my friend had a muscle in her arms WITHOUT exercise. Amazing eh? Our conclusion: the reason she had a muscle in her arms is by combing her hair. Weird? Yes. But it's true! She combs her hair for a few minutes. Combing your hair uses your arms right? Then probably after a few months or weeks, you'll have a muscle in your arms. Haha. Why won't you try it? It may work. :)
Avoid situations where you need to use your arms. Rest
Your arms may be skinny due to a lack of muscle mass and strength training. To increase muscle mass in your arms, you can incorporate exercises like bicep curls, tricep dips, and push-ups into your workout routine. Additionally, consuming a balanced diet with adequate protein intake can help support muscle growth.
skeletal muscle
If we get cold you may see goosepumps on your arms, this is cause by a muscle called papilli muscle.