Posterior nerve roots

dorsal root

The sensory root of a spinal nerve. Also called posterior root.

dorsal root

Etymology: L, dorsalis, back; AS, rot

the sensory component or posterior root of a spinal nerve, attached centrally to the spinal cord.

root [roōt]

1. the descending and subterranean part of a plant.

2. that portion of an organ, such as a tooth, hair, or nail, that is buried in the tissues, or by which it arises from another structure, or the part of a nerve that is adjacent to the center to which it is connected.

Tooth anomalies with variations in root form. From Darby and Walsh, 1994.

anterior root the anterior, or motor, division of each spinal nerve, attached centrally to the spinal cord and joining peripherally with the posterior root to form the nerve before it emerges from the intervertebral foramen; it conveys motor fibers to skeletal muscle and contains preganglionic autonomic fibers at the thoracolumbar and sacral levels. Called also ventral root.

nerve r's the series of paired bundles of nerve fibers which emerge at each side of the spinal cord, termed dorsal (or posterior) or ventral (or anterior) according to their position. There are 31 pairs (8 cervical, 12 thoracic, 5 lumbar, 5 sacral, and 1 coccygeal), each corresponding dorsal and ventral root joining to form a spinal nerve. Certain cranial nerves, e.g., the trigeminal, also have nerve roots.

posterior root the posterior, or sensory, division of each spinal nerve, attached centrally to the spinal cord and joining peripherally with the anterior root to form the nerve before it emerges from the intervertebral foramen; each posterior root bears a spinal ganglion that conveys sensory fibers to the spinal cord. Called also dorsal root.

2. that portion of an organ, such as a tooth, hair or nail, that is buried in the tissues, or by which it arises from another structure, or the part of a nerve that is adjacent to the center to which it is connected, e.g. root of neck, root of tail.

root canal

that part of the dental pulp cavity extending from the pulp chamber to the apical foramen. Called also pulp canal.

dental root elevator

screwdriver-shaped instrument with a grooved and beveled blade. By pushing the tip of the blade between the tooth root and the alveolar wall the periodontal membrane is broken and the root is elevated and removed.

dorsal root

the sensory division of each spinal nerve, attached centrally to the spinal cord and joining peripherally with the ventral root to form the nerve before it emerges from the intervertebral foramen.

mesenteric root

the small area of attachment of the mesentery to the dorsal abdominal wall at about the level of the first lumbar vertebrae. It encloses the vessels and nerves that supply the intestine.

nerve r's

the series of paired bundles of nerve fibers which emerge at each side of the spinal cord, termed dorsal (or posterior) or ventral (or anterior) according to their position. A series of dorsal and ventral roots join to form a spinal nerve. Certain cranial nerves, e.g. the trigeminal, also have nerve roots.

root signature

referred pain down a limb, causing lameness or elevation of the limb, resulting from entrapment of the spinal nerve, usually by an extruded intervertebral disk.

root sheath cuticle

single layer of cornified cells of the hair follicle interdigitating with the cornified cells of the hair cuticle.

ventral root

the motor division of each spinal nerve, attached centrally to the spinal cord and joining peripherally with the dorsal root to form the nerve before it emerges from the intervertebral foramen.

Mentioned in	?		References in periodicals archive	?		Medical browser	?		Full browser	?
basal ganglia carotid ganglion cerebrospinal ganglion cervical ganglion cervicothoracic ganglion ciliary ganglion Corti's ganglion dorsal root ganglion dorsal root ganglion syndrome DREZ funiculus ganglion ganglion impar gasserian ganglion geniculate ganglion hair root jugular ganglion Ludwig's ganglion motor root	Herpes zoster results from reactivation of varicella virus that has lain dormant in the cerebral ganglia (extramedullary ganglia of the cranial nerves) or the ganglia of posterior nerve roots since a previous episode of chickenpox. What Is Chickenpox and What Are It's Main Causes? by peterhutch / Health, general community	posterior fontanel posterior fossa posterior funiculus posterior horn posterior inferior cerebellar artery syndrome posterior intercostal vein posterior interosseous nerve posterior keratoconus posterior kidney posterior labial nerve posterior labial vein posterior lacrimal crest posterior lateral nasal artery posterior ligament posterior limiting ring posterior liver posterior lobe of hypophysis posterior longitudinal ligament posterior median fissure posterior median line posterior median sulcus posterior mediastinal node posterior mediastinum posterior nares posterior nasal spine Posterior nerve roots posterior neuropore posterior occlusion posterior palatal seal area posterior palatine foramen posterior parietal artery posterior perforated substance posterior pituitary gland posterior pyramid of medulla posterior ramus posterior rhinoscopy posterior rhizotomy posterior root posterior sagittal anorectoplasty posterior scalene muscle posterior scleritis posterior scrotal nerve posterior scrotal vein posterior segment of the eye posterior septal artery of nose posterior spinal arteries posterior spinocerebellar tract posterior staphyloma posterior subcapsular cataract posterior supraclavicular nerve posterior synechia	Posterior Lumbar Interbody Fusion Posterior Malalignment Type Ventricular Septal Defect Posterior Mean Estimator posterior median fissure posterior median fissure posterior median fissure posterior median fissure posterior median line Posterior median septum posterior median sulcus posterior median sulcus posterior median sulcus Posterior mediastinal Posterior mediastinal cavity Posterior mediastinal cavity Posterior mediastinal cavity posterior mediastinal node Posterior mediastinum Posterior medullary velum posterior meningeal artery Posterior Middle Temporal Gyrus Posterior Mitral Leaflet Posterior Mitral Leaflet Motion Posterior Mitral Valve Leaflet posterior nares posterior naris posterior nasal spine posterior nasal spine posterior nasal spine posterior nasal spine Posterior nerve roots posterior neuropore Posterior Nucleus/Zona Incerta Region Posterior Occipital Sharp Transients of Sleep posterior occlusion posterior odds posterior odds posterior odds posterior palatal bar posterior palatal bar posterior palatal bar posterior palatal bar posterior palatal bar posterior palatal major connector posterior palatal major connector posterior palatal major connector posterior palatal seal posterior palatal seal posterior palatal seal posterior palatal seal posterior palatal seal posterior palatal seal area posterior palatal seal area posterior palatal seal area posterior palatal seal area posterior palatal seal area posterior palatine foramen Posterior Papillary Muscle Repositioning posterior paralysis posterior paralysis posterior paralysis

Mentioned in

References in periodicals archive

Medical browser

Full browser

basal ganglia
carotid ganglion
cerebrospinal ganglion
cervical ganglion
cervicothoracic ganglion
ciliary ganglion
Corti's ganglion
dorsal root ganglion
dorsal root ganglion syndrome
DREZ
funiculus
ganglion
ganglion impar
gasserian ganglion
geniculate ganglion
hair root
jugular ganglion
Ludwig's ganglion
motor root

Herpes zoster results from reactivation of varicella virus that has lain dormant in the cerebral ganglia (extramedullary ganglia of the cranial nerves) or the ganglia of posterior nerve roots since a previous episode of chickenpox.

What Is Chickenpox and What Are It's Main Causes? by peterhutch / Health, general community

posterior inferior cerebellar artery syndrome

posterior intercostal vein

posterior interosseous nerve

posterior keratoconus

posterior kidney

posterior labial nerve

posterior labial vein