Levator claviculae muscle

File:Leonardo Anatomy of the Neck, c. 1515.jpg

Anatomical muscle in the human body

The levator claviculae muscle is a rare anatomical variant found in the human body. It is a small muscle that originates from the transverse processes of the cervical vertebrae and inserts into the clavicle. This muscle is not present in all individuals and is considered an anatomical anomaly.

Anatomy

The levator claviculae muscle typically arises from the transverse processes of the upper cervical vertebrae, most commonly from the C1 to C4 vertebrae. It then travels downward and laterally to insert onto the superior surface of the clavicle. The muscle is innervated by branches of the cervical plexus.

Function

The primary function of the levator claviculae muscle is to elevate the clavicle. This action can assist in movements of the shoulder girdle, particularly in activities that require lifting or shrugging of the shoulders.

Clinical Significance

Due to its rarity, the levator claviculae muscle is often discovered incidentally during imaging studies or surgical procedures. It is important for clinicians to be aware of this muscle to avoid misdiagnosis of pathological conditions. In some cases, the presence of this muscle can be mistaken for a lymph node or other mass in the neck region.

Related Muscles

The levator claviculae muscle is often compared to the levator scapulae muscle, which also originates from the cervical vertebrae but inserts onto the scapula. Both muscles share a similar function in elevating parts of the shoulder girdle.

See Also

• Levator scapulae muscle
• Cervical vertebrae
• Clavicle
• Cervical plexus