accessory fibers

fibers of the zonule of Zinn that are perpendicular to the chief fibers and do not reach the lens of the eye, supporting and bracing the fibers running from the ciliary body to the chief fibers; they include the interciliary fibers and the orbiculociliary fibers. Called also auxiliary f's.

Medical dictionary. 2011.

Look at other dictionaries:

  • Accessory nerve — Nerve: Accessory nerve Plan of upper portions of glossopharyngeal, vagus, and accessory nerves …   Wikipedia

  • accessory pathway — accessory conduction pathway myocardial fibers that propagate the atrial contraction impulse to the ventricles but are not a part of the normal atrioventricular conducting system; impulses conducted over such a pathway can cause preexcitation… …   Medical dictionary

  • Accessory cuneate nucleus — Infobox Brain Name = PAGENAME Latin = nucleus cuneatus accessorius GraySubject = GrayPage = Caption = Caption2 = IsPartOf = Medulla Components = Artery = Vein = Acronym = BrainInfoType = hier BrainInfoNumber = 765 MeshName = MeshNumber =… …   Wikipedia

  • accessory nerve — Anat. either one of the eleventh pair of cranial nerves, consisting of motor fibers from the spinal cord that innervate the pharyngeal, trapezius, and sternocleidomastoid muscles, and motor fibers from the brain that join the vagus to innervate… …   Universalium

  • accessory nerve — acces′sory nerve n. anat. either one of the 11th pair of cranial nerves found only in mammals, composed of motor fibers that function in speech and swallowing • Etymology: 1835–45 …   From formal English to slang

  • interciliary fibers — those accessory fibers that run between the ciliary processes …   Medical dictionary

  • orbiculociliary fibers — those accessory fibers that pass from the pars orbicularis to the ciliary processes …   Medical dictionary

  • auxiliary fibers — accessory f s …   Medical dictionary

  • Cranial root of accessory nerves — Nerve: Cranial root of accessory nerves Brain stem sagittal section (11 visible near bottom center. Note how in this diagram, root derives entirely from spinal portion, and ascends to cranium.) …   Wikipedia

  • Posterior external arcuate fibers — Diagram showing the course of the arcuate fibers. (Testut.) 1. Medulla oblongata anterior surface. 2. Anterior median fissure. 3. Fourth ventricle. 4. Inferior olivary nucleus, with the accessory olivary nuclei. 5. Gracile nucleus …   Wikipedia

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