anatomy Anatomy (Greek ''anatomē'', 'dissection') is the branch of biology Biology is the natural science that studies life and living organisms, including their anatomy, physical structure, Biochemistry, chemical processes, Molecular biology, ...

neurology Neurology (from el, , "string, nerve" and the suffix , "study of") is a branch of dealing with . Neurology deals with the diagnosis and treatment of all categories of conditions and disease involving the and s (and their subdivisions, the ...
, the ventral root, motor root or anterior root is the efferent
motor An engine or motor is a machine A machine is a man-made device that uses power to apply forces and control movement to perform an action. Machines can be driven by animals and people A people is a plurality of person A person ( ...

root of a
spinal nerve A spinal nerve is a , which carries motor, sensory, and autonomic signals between the and the body. In the there are 31 pairs of spinal nerves, one on each side of the . These are grouped into the corresponding , , , and regions of the spine. ...

spinal nerve
. 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 The spinal cord is a long, thin, tubular structure made up of , which extends from the in the to the ...
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.


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 {{neuroscience-stub