Medical Definition of Ramus dorsalis nervorum spinalium

1. The smaller, posteriorly-directed major terminal branch (with the ventral primary ramus) of all 31 pairs of mixed spinal nerves, formed at the intervertebral foramen and turning abruptly posteriorly to divide into lateral and medial branches, both of which will supply the deep (true) muscles of the back. The medial branch (rami medialis ) of the dorsal primary ramus also supplies articular branches to the zygopophyseal joints and the periosteum of the vertebral arch. In the neck and upper back, the medial branch continues through the deep and superficial back muscles to supply overlying skin; in the lower back, the lateral branch does this. Nomina Anatomica lists dorsal primary rami as "rami dorsales" for each group of spinal nerves: 1) cervical (nervorum cervicalium ), 2) thoracic (nervorum thoracicorum ), 3) lumbar (nervorum lumbalium ), 4) sacral (nervorum sacralium ), and 5) coccygeal (nervi coccygei ). Synonym: ramus dorsalis nervorum spinalium, ramus dorsalis, rami posteriores nervorum spinalium, dorsal branch, posterior primary division. (05 Mar 2000)

Lexicographical Neighbors of Ramus Dorsalis Nervorum Spinalium

ramus cutaneus medialis
ramus cutaneus medialis rami dorsalis arteriarum intercostalium posteriorum III-XI
ramus cutaneus medialis ramorum dorsalium nervorum thoracicorum
ramus cutaneus rami anterioris nervi obturatorii
ramus deltoideus
ramus descendens
ramus descendens arteriae circumflexae femoris lateralis
ramus descendens arteriae occipitalis
ramus dexter
ramus dexter arteriae hepaticae propriae
ramus dexter venae portae hepatis
ramus digastricus nervi facialis
ramus dorsalis
ramus dorsalis arteriae lumbalium
ramus dorsalis arteriarum intercostalium posteriorum III-XI
ramus dorsalis nervorum spinalium (current term)
ramus dorsalis venarum intercostalium posteriorum IV-XI
ramus externus nervi accessorii
ramus externus nervi laryngei superioris
ramus femoralis nervi genitofemoralis
ramus frontalis anteromedialis
ramus frontalis arteriae temporalis superficialis
ramus frontalis interomedialis
ramus frontalis posteromedialis
ramus ganglii trigeminalis
ramus glandulares anterior/lateralis/posterior arteriae thyroideae superioris
ramus hypothalamicus
ramus iliacus arteriae iliolumbalis
ramus inferior

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