Ciliospinal reflex
Ciliospinal Reflex
The Ciliospinal Reflex (pronounced: sil-ee-oh-SPY-nal ree-flex) is a complex neurological response that involves the dilation of the pupil in response to pain or temperature stimuli applied to the skin of the neck, face, and upper trunk.
Etymology
The term "Ciliospinal" is derived from the Latin words 'cilia' meaning 'eyelash' and 'spinalis' meaning 'spinal'. The term "reflex" comes from the Latin 'reflexus', meaning 'bent back'. Together, they describe a reflex that involves the spinal cord and affects the eye's pupil.
Function
The Ciliospinal Reflex is part of the body's autonomic nervous system, which controls involuntary actions. When a painful or temperature stimulus is applied to the skin of the neck, face, or upper trunk, the reflex causes the pupil of the eye to dilate. This reflex is often tested during neurological examinations to assess the function of the autonomic nervous system.
Related Terms
- Pupil: The adjustable opening in the center of the eye that allows light to strike the retina.
- Autonomic Nervous System: The part of the nervous system responsible for control of the bodily functions not consciously directed, such as breathing, the heartbeat, and digestive processes.
- Neurological Examination: A series of tests that can provide information about the nervous system and related structures.
See Also
External links
- Medical encyclopedia article on Ciliospinal reflex
- Wikipedia's article - Ciliospinal reflex
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