The ciliospinal center (in Latin: ''centrum ciliospinale'') is a structure which receives input from the
pretectum
In neuroanatomy, the pretectal area, or pretectum, is a midbrain structure composed of seven nuclei and comprises part of the subcortical visual system. Through reciprocal bilateral projections from the retina, it is involved primarily in mediati ...
, and has output to the
superior cervical ganglion.
It is located in the
intermediolateral cell columns (IMLCC) of the spinal cord between C8 and T2.
It plays a role in the control of the
iris dilator muscle
The iris dilator muscle (pupil dilator muscle, pupillary dilator, radial muscle of iris, radiating fibers), is a smooth muscle of the eye, running radially in the iris and therefore fit as a dilator. The pupillary dilator consists of a spokelike ...
. It is also known as "Budge's center", or "centre".
It is associated with a reflex identified by
Augustus Volney Waller and
Ludwig Julius Budge in 1852.
See also
*
Horner's syndrome
Horner's syndrome, also known as oculosympathetic paresis, is a combination of symptoms that arises when a group of nerves known as the sympathetic trunk is damaged. The signs and symptoms occur on the same side (ipsilateral) as it is a lesion ...
References
Spinal cord
{{anatomy-stub