Arm

In <a href="/facts/Human_anatomy/WP1QbDTn">human anatomy</a>, the arm refers to the <a href="/facts/Upper_limb/2uEQR861">upper limb</a> in common usage, although academically the term specifically means the upper arm between the <a href="/facts/Glenohumeral_joint/5JJKnAn0">glenohumeral joint</a> (shoulder joint) and the <a href="/facts/Elbow_joint/2bH9FY0F">elbow joint</a>. The distal part of the upper limb between the elbow and the <a href="/facts/Radiocarpal_joint/scSMl0zG">radiocarpal joint</a> (<a href="/facts/Wrist/scSMl0zG">wrist joint</a>) is known as the <a href="/facts/Forearm/Wpe7F8vf">forearm</a> or "lower" arm, and the extremity beyond the wrist is the <a href="/facts/Hand/0yhW6deV">hand</a>.
By anatomical definitions, the <a href="/facts/Bone/kwJaR6IQ">bones</a>, <a href="/facts/Ligament/xAf6lB1z">ligaments</a> and <a href="/facts/Skeletal_muscle/en1tVYFN">skeletal muscles</a> of the <a href="/facts/Shoulder_girdle/XyWsm4hv">shoulder girdle</a>, as well as the <a href="/facts/Axilla/Q0EaYG2p">axilla</a> between them, are considered parts of the upper limb, and thus also components of the arm. The <a href="/facts/Latin/pM3Kge85">Latin</a> term brachium, which serves as a <a href="/facts/Root_word/VwkvmJxn">root word</a> for naming many anatomical structures, may refer to either the upper limb as a whole or to the upper arm on its own.

Arm open-in-new

Arm