Muscles, controlled by the brain, move the limbs by contracting and relaxing.
yes if you hold your arm as you move it you can see your tricep and bicep contract and relax.
They can be called limbs, appendages, extremities, or members.
Arms, or limbs.
Legs and arms are limbs, tails are also limbs.
The two body systems that enable movement in our limbs are the muscular system and the skeletal system. The skeletal system provides the framework and structure for the limbs, while the muscular system facilitates movement through muscle contractions. Muscles attach to bones via tendons, allowing for coordinated movement when the muscles contract and relax. Together, these systems work in harmony to allow for a wide range of motions in the arms and legs.
When you have no limbs. ( legs or arms ).
An "extremity" refers to your limbs (arms and legs). Lower extremities are your legs; upper extremities are your arms.
As an otter can run on all four limbs, the front limbs are often used as arms to handle their food. So, I would say they have two arms.
Arms
arms
Legs and or arms
The collective nouns for arms are a a store of arms and a cache of arms (weapons), and a pair of arms (limbs).