Question

question
which spinal segment of the cervical plexus innervates the skin of the upper chest, shoulder, neck, and ear?
answer
c₃ - c₅
c₆
c₁
c₂ - c₃
i dont know yet

Explanation:

The cervical plexus is formed by the anterior rami of the first four cervical nerves (\(C_1 - C_4\)). The cutaneous branches of the cervical plexus (such as the lesser occipital nerve, great auricular nerve, transverse cervical nerve, and supraclavicular nerves) that innervate the skin of the upper chest, shoulder, neck, and ear mainly arise from \(C_2 - C_3\) segments. \(C_1\) has mainly motor functions and little cutaneous innervation. \(C_5\) and above (\(C_3 - C_5\)) are more related to other plexus - related innervations (like the brachial plexus which \(C_5\) contributes to). \(C_6\) is part of the brachial plexus.

Answer:

\(C_2 - C_3\)