anatomy Anatomy () is the branch of biology concerned with the study of the structure of organisms and their parts. Anatomy is a branch of natural science that deals with the structural organization of living things. It is an old science, having i ...

and

neurology Neurology (from el, νεῦρον (neûron), "string, nerve" and the suffix -logia, "study of") is the branch of medicine dealing with the diagnosis and treatment of all categories of conditions and disease involving the brain, the spinal ...

, the ventral root of spinal nerve, anterior root, or motor root is the efferent

motor An engine or motor is a machine designed to convert one or more forms of energy into mechanical energy. Available energy sources include potential energy (e.g. energy of the Earth's gravitational field as exploited in hydroelectric power g ...

root of a

spinal nerve A spinal nerve is a mixed nerve, which carries motor, sensory, and autonomic signals between the spinal cord and the body. In the human body there are 31 pairs of spinal nerves, one on each side of the vertebral column. These are grouped into the ...

. At its distal end, the ventral root joins with the

dorsal root The dorsal root of spinal nerve (or posterior root of spinal nerve or sensory root) is one of two "roots" which emerge from the spinal cord. It emerges directly from the spinal cord, and travels to the dorsal root ganglion. Nerve fibres with the ve ...

to form a mixed spinal nerve.

Additional images

Image:Cervical vertebra english.png, Cervical vertebra Image:Medulla spinalis - Section - English.svg, Medulla spinalis Image:Gray675.png, A spinal nerve with its anterior and posterior. Image:Gray764.png, The motor tract. Image:Gray770-en.svg, Diagrammatic transverse section of the medulla spinalis and its membranes. Image:Gray796.png, A portion of the spinal cord, showing its right lateral surface. The dura is opened and arranged to show the nerve roots. Image:Gray799.svg, Scheme showing structure of a typical spinal nerve.

References

External links

* * - "Autonomic Connections of the Spinal Cord" * - "Spinal Root Nerve Fibers"
Diagram at tcc.fl.edu (look for #2)
Back anatomy Peripheral nervous system {{Neuroanatomy-stub