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
The superior cervical ganglion (SCG) is part of the autonomic nervous system (ANS); more specifically, it is part of the sympathetic nervous system, a division of the ANS most commonly associated with the fight or flight response. The ANS is comp ...
.
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
Augustus Volney Waller FRS (21 December 1816 – 18 September 1870) was a British neurophysiologist. He was the first to describe the degeneration of severed nerve fibers, now known as Wallerian degeneration.
Life
The son of William Waller ...
and
Ludwig Julius Budge
Ludwig Julius Budge (11 September 1811, in Wetzlar – 14 July 1888, in Greifswald) was a German physiologist
Physiology (; ) is the scientific study of functions and mechanisms in a living system. As a sub-discipline of biology, physi ...
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 o ...
References
Spinal cord
{{anatomy-stub