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Everywhere else in the spine, the nerve emerges below the vertebra with the same name. The posterior distribution includes the suboccipital nerve (C1), the greater occipital nerve (C2) and the third occipital nerve (C3). The anterior distribution includes the cervical plexus (C1–C4) and brachial plexus (C5–T1).
Mar 19, 2024 · Overall, the posterior regions of the spinal cord are responsible for ascending sensory information, while the anterior regions are responsible for descending motor information. Spinal nerves are all mixed nerves with both sensory and motor fibers.
Oct 30, 2023 · Having exited the vertebral canal, the spinal nerve divides into two branches: a larger anterior or ventral ramus, and a smaller posterior or dorsal ramus. Generally speaking, the anterior/ventral ramus innervates the skin and muscle on the anterior aspect of the trunk, while the posterior/dorsal ramus innervates the post-vertebral muscles and ...
References. Posterior branches of the lumbar nerves. The posterior branches of the lumbar nerves branch from the dorsal rami of the lumbar nerves . Branches. The medial branches run close to the articular processes of the vertebræ and end in the Multifidus. The lateral branches supply the Sacrospinalis.
Jan 17, 2023 · Key Terms. nerve plexus: A branching network of intersecting nerves. dorsal ramus: The posterior (or dorsal) branches (or divisions) of the spinal nerves are, as a rule, smaller than the anterior divisions. They are also referred to as the dorsal rami.
Jan 17, 2023 · The spinal cord can be divided into the lateral, posterior, and medial cord, each segment of which gives rise to specific nerves and serves specific areas of the body.
