neural arch


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neural arch

[′nu̇r·əl ′ärch]
(anatomy)
References in periodicals archive ?
Material: Three dorsal vertebra fragments (MG 8809) including a transverse process and a partial neural arch preserving the prezygapophysis.
The effect of removing the lateral part of the pars interarticularis on stress distribution at the neural arch in lumbar foraminal micro-decompression at L3-L4 and L4-L5: anatomic and finite element investigations.
Remarks--Holman (8) described this small erycine snake as having a vertebral form much wider than long, an extremely depressed neural arch, a neural spine that overhangs posteriorly and is about as high as long, and a moderately wide, distinct hemal keel with distinct, robust subcentral ridges and well defined, deep subcentral grooves.
After soaking in silver nitrate, each neural arch was rinsed with distilled water to remove any excess solution.
The neural arch is formed by two pedicles that project posteriorly from the posterior and posterolateral aspect of the body where they join the laminae.
Both vertebrae in UPUAM 14702a present the neural arch and the dorsal portion of the centrum (Fig.
1) exhibit the following characters typical of these genera: general shape long and constricted medially; well developed epizygapophyseal spines; thin, long neural spine; thin, relatively uniform in width hemal keel; strong posterior neural spine overhang; and high, domed neural arch.
The diapophyseal processes are associated with the neural arch, located on the base of the neural spine.
DISCUSSION: Spondylolysis is now specifically used to describe a bony defect in the pars interarticularis, the portion of the neural arch just caudal to the confluence of the pedicle and the superior articular process and at the most cephalad part of the lamina and inferior articular process.
a partial postcranial skeleton that comprises the neural arch of the axis and another four cervical vertebrae, one centrum and some fragments of neural arches of dorsal vertebrae, three vertebral centra and some fragments of neural spines of sacral vertebrae, nine anterior caudal vertebrae, cervical and dorsal rib fragments, five haemal arches, ossified tendon fragments, a proximal fragment of the right scapula and the incomplete left pelvic girdle represented by the anterior and dorsal part of the ilium, prepubis and a proximal fragment of the ischium (Figs.
The studied material includes a cervical centrum with both pedicles fused to it (MPZ 2013/374), a small dorsal vertebra with an almost complete neural arch including the neural spine (MPZ 2013/373), a partial sacrum (MPZ2013/366) and eight caudal vertebrae (MPZ 2013/ 367 to 372, MPZ2013/385) (Fig.
The one vertebra (12525) is badly damaged, but it is clearly like Ambystoma tigrinum based on its relatively large size and upswept neural arch (Holman, 1969).