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  2. Brachial plexus - Wikipedia

    en.wikipedia.org/wiki/Brachial_plexus

    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.

  3. Cervical vertebrae - Wikipedia

    en.wikipedia.org/wiki/Cervical_vertebrae

    In humans, cervical vertebrae are the smallest of the true vertebrae and can be readily distinguished from those of the thoracic or lumbar regions by the presence of a foramen (hole) in each transverse process, through which the vertebral artery, vertebral veins, and inferior cervical ganglion pass. The remainder of this article focuses upon ...

  4. Rhomboid minor muscle - Wikipedia

    en.wikipedia.org/wiki/Rhomboid_minor_muscle

    In human anatomy, the rhomboid minor is a small skeletal muscle of the back that connects the scapula to the vertebrae of the spinal column. [1] It arises from the nuchal ligament, and the 7th cervical and 1st thoracic vertebrae and intervening supraspinous ligaments; it inserts onto the medial border of the scapula.

  5. Cervical spinal nerve 8 - Wikipedia

    en.wikipedia.org/wiki/Cervical_spinal_nerve_8

    The cervical spinal nerve 8 (C8) is a spinal nerve of the cervical segment. [1] ... C7, C8, T1) Pectoralis minor - Medial pectoral nerve (C5, C6, C7, C8, T1)

  6. Thoracic vertebrae - Wikipedia

    en.wikipedia.org/wiki/Thoracic_vertebrae

    The vertebral foramen is the large opening posterior to the vertebral body also known as the spinal canal. It contains and protects the spinal cord at the thoracic level. The spinous process is long, triangular on coronal section, directed obliquely downward, arising from the lamina and ending in a tuberculated extremity. These processes ...

  7. Spinal nerve - Wikipedia

    en.wikipedia.org/wiki/Spinal_nerve

    This is true for all spinal nerves except for the first spinal nerve pair (C1), which emerges between the occipital bone and the atlas (the first vertebra). [3] Thus the cervical nerves are numbered by the vertebra below, except spinal nerve C8, which exists below vertebra C7 and above vertebra T1.

  8. Thoracic spinal nerve 1 - Wikipedia

    en.wikipedia.org/wiki/Thoracic_spinal_nerve_1

    The thoracic spinal nerve 1 (T1) is a spinal nerve of the thoracic segment. [1] It originates from the spinal column from below the thoracic vertebra 1 (T1).

  9. Facet joint - Wikipedia

    en.wikipedia.org/wiki/Facet_joint

    The facet joint between C7 and T1 is innervated by the C7 and C8 medial branch nerves. [citation needed] In the thoracic and lumbar spine, the facet joints are innervated by the medial branch nerves from the vertebral segment above the upper segment and the upper segment.

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