Supraclavicular nerve

Supraclavicular nerves
The nerves of the scalp, face, and side of neck. (Supraclavicular nerves visible at bottom.)
Plan of the cervical plexus. (Superficial descending labeled at bottom left.)
Details
From	C3–C4 of cervical plexus
Innervates	Cutaneous innervation of the skin above and below the clavicle.
Identifiers
Latin	nervi supraclaviculares
TA	A14.2.02.024
FMA	65414
Anatomical terms of neuroanatomy []

The supraclavicular nerves (descending branches) arise from the third and fourth cervical nerves; they emerge beneath the posterior border of the Sternocleidomastoideus, and descend in the posterior triangle of the neck beneath the platysma and deep cervical fascia.

Near the clavicle they perforate the fascia and Platysma to become cutaneous, and are arranged, according to their position, into three groups—anterior, middle and posterior.

The medial supraclavicular nerves or anterior supraclavicular nerves (nn. supraclaviculares anteriores; suprasternal nerves) cross obliquely over the external jugular vein and the clavicular and sternal heads of the sternocleidomastoideus, and supply the skin as far as the middle line. They furnish one or two filaments to the sternoclavicular joint.

The intermedial supraclavicular nerve middle supraclavicular nerves (nn. supraclaviculares medii; supraclavicular nerves) cross the clavicle, and supply the skin over the pectoralis major and deltoideus, communicating with the cutaneous branches of the upper intercostal nerves.

The lateral supraclavicular nerve or posterior supraclavicular nerves(nn. supraclaviculares posteriores; supra-acromial nerves) pass obliquely across the outer surface of the trapezius and the acromion, and supply the skin of the upper and posterior parts of the shoulder.

Dermatome distribution of the trigeminal nerve

Cutaneous nerves of right upper extremity.

Diagram of segmental distribution of the cutaneous nerves of the right upper extremity.