The spelling of the term "nervus ciliaris brevia" can be easily understood by breaking it down into its phonetic components using the International Phonetic Alphabet (IPA). The word starts with the nasal sound "n", followed by the vowel sound "ɜːr", then the consonant "v", and the sound "əs". The next two words "ciliaris brevia" consist of the consonant "s", the vowel sounds "ɪ" and "eɪ", the consonant cluster "lj", the vowel sound "ɑː", and the consonant "s" again. Therefore, the phonetic transcription of "nervus ciliaris brevia" is /ˈnɜːvəs sɪˈlɪərɪs ˈbreɪvɪə/.
The term "nervus ciliaris brevia" is a Latin expression that is primarily used in anatomy, specifically in reference to the nervous system and the eye. "Nervus" translates to "nerve" in English, while "ciliaris" relates to "ciliary" referring to the ciliary body, and finally "brevis" meaning "short." Therefore, "nervus ciliaris brevia" can be understood as the "short ciliary nerve."
In terms of anatomical context, the short ciliary nerve is a branch of the ophthalmic division of the trigeminal nerve (cranial nerve V). These nerves are responsible for carrying sensory information from the eye to the brain and for controlling the movements of certain eye muscles. More specifically, the short ciliary nerves innervate the ciliary body, which is a ring-shaped structure that surrounds the lens of the eye. They also provide sensory fibers to the iris and supply the sphincter pupillae muscle.
The short ciliary nerves play a crucial role in regulating the shape of the lens and the size of the pupil, which are essential for focusing and adapting to different lighting conditions. Dysfunction or damage to these nerves can lead to various eye-related conditions or impairments, such as impaired accommodation (ability to focus on near objects) or pupil abnormalities.
Overall, the nervus ciliaris brevia is a short ciliary nerve, an anatomical structure that carries sensory information and controls the muscles of the eye, particularly those involved in focusing and adjusting the size of the pupil.
Short ciliary nerve, one of a number of branches of the ciliary ganglion, supplying the ciliary muscles, iris, and tunics of the eyeball.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.