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The cervical spinal nerve 6 (C6) is a spinal nerve of the cervical segment. [1] It originates from the spinal column from above the cervical vertebra 6 (C6). The C6 nerve root shares a common branch from C5, and has a role in innervating many muscles of the rotator cuff and distal arm, [2] including: Subclavius; Supraspinatus; Infraspinatus ...
The brachial plexus is a network of nerves (nerve plexus) formed by the anterior rami of the lower four cervical nerves and first thoracic nerve (C5, C6, C7, C8, and T1).This plexus extends from the spinal cord, through the cervicoaxillary canal in the neck, over the first rib, and into the armpit, it supplies afferent and efferent nerve fibers to the chest, shoulder, arm, forearm, and hand.
The extensor digitorum reflex is tested as part of the neurological examination to assess the sensory and motor pathways within the C6 and C7 spinal nerves. It is also known as Braunecker-Effenberg reflex , or BER .
The cervical spinal nerve 7 (C7) is a spinal nerve of the cervical segment. [1] It originates from the spinal column from above the cervical vertebra 7 (C7). It runs through the interspace between the C6 and C7 vertebrae.
Spinal nerve Typical spinal nerve location. Each spinal nerve is a mixed nerve, formed from the combination of nerve root fibers from its dorsal and ventral roots. The dorsal root is the afferent sensory root and carries sensory information to the brain. The ventral root is the efferent motor root and carries motor information from the brain.
The long thoracic nerve arises from the anterior rami of cervical spinal nerves C5, C6, and C7. [1] [2] [3] The root from C7 may occasionally be absent. [4] The roots from C5 and C6 pierce through the scalenus medius, while the C7 root passes in front of the muscle. [citation needed]
The vertebra prominens, or C7, has a distinctive long and prominent spinous process, which is palpable from the skin surface. Sometimes, the seventh cervical vertebra is associated with an abnormal extra rib, known as a cervical rib , which develops from the anterior root of the transverse process.
The long thoracic nerve traverses this passageway in addition to axillary blood vessels and the brachial plexus. This complex nerve network arises in the neck from the fifth, sixth, seventh and eighth cervical roots, C5, C6, C7 and C8, together with the first thoracic root, T1. It then enters the canal in the axilla. [5] [6]