Dorsal scapular nerve
Dorsal Scapular Nerve
The Dorsal Scapular Nerve (pronunciation: DOR-sal SKAP-u-lar NERV) is a nerve that originates from the brachial plexus, specifically the cervical spine region.
Etymology
The term "Dorsal Scapular Nerve" is derived from the Latin words "dorsum" meaning back, "scapula" referring to the shoulder blade, and "nervus" meaning nerve.
Anatomy
The Dorsal Scapular Nerve arises from the C5 nerve root of the brachial plexus. It provides motor innervation to the rhomboid muscles and the levator scapulae muscle, which are responsible for the movements of the scapula.
Clinical Significance
Damage or injury to the Dorsal Scapular Nerve can lead to conditions such as winged scapula, where the scapula protrudes from the back in an abnormal position. This can result in pain and limited range of motion in the shoulder.
Related Terms
- Brachial Plexus: A network of nerves that originate from the neck and provide innervation to the chest, shoulder, arm, and hand.
- Cervical Spine: The uppermost part of the spine, located in the neck.
- Rhomboid Muscles: Two muscles located in the upper back that connect the spine to the inner edges of the scapula.
- Levator Scapulae Muscle: A muscle located at the back and side of the neck that lifts the scapula.
- Scapula: Also known as the shoulder blade, it is a flat, triangular bone located at the back of the shoulder.
- Winged Scapula: A condition where the scapula protrudes from the back in an abnormal position due to nerve damage.
External links
- Medical encyclopedia article on Dorsal scapular nerve
- Wikipedia's article - Dorsal scapular nerve
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