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  2. 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 ...

  3. Cervical spinal nerve 4 - Wikipedia

    en.wikipedia.org/wiki/Cervical_spinal_nerve_4

    Cervical spinal nerve 4, also called C4, is a spinal nerve of the cervical segment. It originates from the spinal cord above the 4th cervical vertebra (C4). It contributes nerve fibers to the phrenic nerve , the motor nerve to the thoracoabdominal diaphragm .

  4. Facet joint - Wikipedia

    en.wikipedia.org/wiki/Facet_joint

    Within the cervical spine, most joints are innervated by the medial branch nerve (a branch of the dorsal rami) from the same levels. In other words, the facet joint between C4 and C5 vertebral segments is innervated by the C4 and C5 medial branch nerves. However, there are two exceptions:

  5. Cervical plexus - Wikipedia

    en.wikipedia.org/wiki/Cervical_plexus

    Phrenic (C3-C5, but mostly C4) - innervates thoracic diaphragm and the pericardium. Segmental branches (C1-C4) - innervate anterior and middle scalene muscles; Levator scapulae muscle (C3-C4) (also innervated by dorsal scapular nerve (C5) of the brachial plexus)

  6. Cervical spinal nerve 5 - Wikipedia

    en.wikipedia.org/wiki/Cervical_spinal_nerve_5

    The cervical spinal nerve 5 (C5) is a spinal nerve of the cervical segment. [1]It originates from the spinal column from above the cervical vertebra 5 (C5). It contributes to the phrenic nerve, long thoracic nerve, and dorsal scapular nerve before joining cervical spinal nerve 6 to form the upper trunk, a trunk of the brachial plexus, which then forms the lateral cord, and finally the ...

  7. Spinal nerve - Wikipedia

    en.wikipedia.org/wiki/Spinal_nerve

    Spinal nerve Typical spinal nerve location. Each spinal nerve is a mixed nerve, ... C4, C5: Supply diaphragm (mostly C4) C5, C6: Move shoulder, raise arm ; flex elbow ...

  8. At 59, Melissa Gilbert Says She Was in ‘Such Pain ... - AOL

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  9. Dermatome (anatomy) - Wikipedia

    en.wikipedia.org/wiki/Dermatome_(anatomy)

    C4 – Over the acromioclavicular joint. C5 – On the lateral (radial) side of the antecubital fossa, just proximally to the elbow. C6 – On the dorsal surface of the proximal phalanx of the thumb. C7 – On the dorsal surface of the proximal phalanx of the middle finger. C8 – On the dorsal surface of the proximal phalanx of the little finger.