Ventral root of spinal nerve

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Ventral root of spinal nerve
The formation of the spinal nerve from the dorsal and ventral roots
Details
Identifiers
Latin	radix anterior nervi spinalis
TA98	A14.2.00.029
TA2	6145
FMA	5979
Anatomical terminology [edit on Wikidata]

In anatomy and neurology, the ventral root of spinal nerve, anterior root, or motor root^[1] is the efferent motor root of a spinal nerve.

At its distal end, the ventral root joins with the dorsal root to form a mixed spinal nerve.

Additional images

Cervical vertebra
Medulla spinalis
A spinal nerve with its anterior and posterior.
The motor tract.
Diagrammatic transverse section of the medulla spinalis and its membranes.
A portion of the spinal cord, showing its right lateral surface. The dura is opened and arranged to show the nerve roots.
Scheme showing structure of a typical spinal nerve.

Anatomy figure: 02:04-12 at Human Anatomy Online, SUNY Downstate Medical Center
Atlas image: n3a6p1 at the University of Michigan Health System - "Autonomic Connections of the Spinal Cord"
Anatomy Atlases – Microscopic Anatomy, plate 06.114 - "Spinal Root Nerve Fibers"
Diagram at tcc.fl.edu (look for #2)

Tissue Types

Cell Types

Neuronal	Pyramidal Purkinje Granule Von Economo Medium spiny Interneuron
Glial	Astrocyte Ependymal cells Tanycyte Oligodendrocyte progenitor cell Oligodendrocyte Microglia

General	Dorsal Root Ganglion Ramus Ventral Root Ramus Ramus communicans Gray White Autonomic ganglion (Preganglionic nerve fibers Postganglionic nerve fibers) Nerve fascicle Funiculus
Connective tissues	Epineurium Perineurium Endoneurium
Neuroglia	Myelination: Schwann cell Neurilemma Myelin incisure Node of Ranvier Internodal segment Satellite glial cell

Parts

Soma	Axon hillock
Axon	Telodendron Axon terminals Axoplasm Axolemma Neurofibril/neurofilament
Dendrite	Nissl body Dendritic spine Apical dendrite/Basal dendrite

Types

Termination

Synapse	Electrical synapse/Gap junction Chemical synapse Synaptic vesicle Active zone Postsynaptic density Autapse Ribbon synapse Neuromuscular junction
Sensory receptors	Meissner's corpuscle Merkel nerve ending Pacinian corpuscle Ruffini ending Muscle spindle Free nerve ending Nociceptor Olfactory receptor neuron Photoreceptor cell Hair cell Taste receptor

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