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Chapter: Human Nervous System and Sensory Organs : Spinal Cord and Spinal Nerves

Posterior Branches - Peripheral Nerves

Each posterior branch divides into a medial and a lateral branch. Both supply motor fibers to the deep autochthonous back muscles.

Posterior Branches

Each posterior branch divides into a medial and a lateral branch. Both supply motor fibers to the deep autochthonous back muscles. Sensory innervation of the back comes mainly from the lateral branches of the posterior branches (AD3). The area sup-plied by the posterior branches of cervical spinal nerves expands widely and includes the occiput (greater occipital nerve) (D4). In the lumbar region, sensory innervation of the back comes from the posterior branches of the lumbar spinal nerves L1 – L3 and the sacral spinal nerves S1 – S3 (superior clunealnerves [D5] and medial cluneal nerves [D6]).

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Human Nervous System and Sensory Organs : Spinal Cord and Spinal Nerves : Posterior Branches - Peripheral Nerves |

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Human Nervous System and Sensory Organs : Spinal Cord and Spinal Nerves

Overview of Spinal Cord and Spinal Nerves

Structure of Spinal Cord

Reflex Arcs - Spinal Cord

Gray Substance and Intrinsic System - Spinal Cord

Cross Sections of the Spinal Cord

Ascending Pathways - Spinal Cord

Descending Pathways - Spinal Cord

Visualization of Pathways - Spinal Cord

Blood Vessels of the Spinal Cord

Spinal Ganglion and Posterior Root - Spinal Cord

Spinal Meninges - Spinal Cord

Segmental Innervation - Spinal Cord

Spinal Cord Syndromes

Peripheral Nerves

Nerve Plexusus - Peripheral Nerves

Cervical Plexus (C1 - C4) - Peripheral Nerves

Posterior Branches - Peripheral Nerves

Brachial Plexus - Peripheral Nerves

Supraclavicular Part - Peripheral Nerves

Infraclavicular Part - Peripheral Nerves

Lateral Fascicle - Infraclavicular Part - Peripheral Nerves

Medial Fascicle - Infraclavicular Part of Peripheral Nerves

Posterior Fascicle - Infraclavicular Part of Peripheral Nerves

Nerves of the Trunk - Peripheral Nerves

Posterior Branches - Peripheral Nerves

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