From which cervical roots does the median nerve originate?

The median nerve originates from the cervical roots C6, C7, C8, and T1. It is primarily formed by contributions from C6 and C7, which contribute a significant portion of its fibers. Additionally, branches from C8 and T1 also participate in the formation of the median nerve. This origin is important as it reflects the nerve's role in motor and sensory functions in the upper limb, particularly in the forearm and hand. Understanding the specific roots involved helps in diagnosing nerve injuries and conditions affecting the arm, as well as informing treatment strategies and rehabilitation plans.