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Details for anatomical structure: sympathetic nerve system element

EndoNet ID: ENC00136

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sympathetic nerve system element, sympathetic nervous system, Pars sympathica divisionis autonomici systematis nervosi

General information

Alongside the other components of the autonomic nervous system, the sympathetic nervous system aids in the control of most of the body's internal organs. Stress - as in the flight-or-fight response - and so may be thought to counteract the parasympathetic system, which generally works to promote maintenance of the body at rest. In truth, the functions of both systems are not so straightforward, but this is a useful rule of thumb. There are two groups of neurons involved in the transmission of any signal through the sympathetic system; pre- and post- ganglionic. The shorter preganglionic neurons originate from the thoracolumbar region of the spinal cord (levels T1 - L2, specifically) and travel to a ganglion, often one of the paravertebral ganglia, where they synapse with a postganglionic neuron. From there, the long postganglionic neurons extend across most of the body.

Links to other resources

Cytomer cy0051876

Larger structures


      Secreted hormones