The main function of the humerus, the bone in your upper arm, is to provide structural support and enable a wide range of movements for the arm and shoulder.
The humerus acts as a crucial link between the shoulder and the elbow, facilitating various movements through muscle attachments.
Functions of the Humerus:
- Support: The humerus supports the shoulder joint and provides a stable base for arm movements.
- Movement: It allows for a wide range of arm movements, including flexion, extension, abduction, adduction, rotation, and circumduction, facilitated by the attachment of various muscles.
- Muscle Attachment: Many muscles of the shoulder, arm, and forearm attach to the humerus, enabling these movements.
- Articulation: The humerus articulates with the scapula (shoulder blade) at the shoulder joint (glenohumeral joint) and with the radius and ulna at the elbow joint, enabling movement at both joints.
In summary, the humerus is essential for both the stability and mobility of the upper limb.
