Verigo and Imbalance: Clinical Neurophysiology Of the Vestiabular System pot

[...]... occupy the rostral half of the nerve and fibers from the maculae of the saccule and utricle are located in the caudal half of the nerve 2.9.1 Efferent projections to the labyrinth 2.9 Labyrinthine innervation and the vestibular nerve The superior vestibular nerve carries fibers from the anterior and lateral ampullae and the utricular macula The inferior vestibular nerve supplies the posterior ampulla and. .. Orbital and muscle gross anatomy The extraocular muscles reside within the bony confines of the pyramid-shaped orbit, the walls of which are formed by the frontal, lacrimal, ethmoid, sphenoid, and zygomatic bones, and the maxilla (Fig 2) At the apex of the pyramid (the orbital apex), the four rectus muscles and the superior oblique arise from a dense fibrous ring of periosteum called the annulus of Zinn The. ..Vertigo and Imbalance: Clinical Neurophysiology of the Vestibular System Handbook of Clinical Neurophysiology, Vol 9 S.D.Z Eggers and D.S Zee (Vol Eds.) # 2010 Elsevier B.V All rights reserved 5 CHAPTER 2 Overview of anatomy and physiology of the vestibular system Terry D Fife* Department of Neurology, University of Arizona College of Medicine, and Arizona Balance Center, Barrow... Descending and reticular relations to the vestibular nuclei: anatomy Prog Brain Res., 37: 385–388 Vertigo and Imbalance: Clinical Neurophysiology of the Vestibular System Handbook of Clinical Neurophysiology, Vol 9 S.D.Z Eggers and D.S Zee (Vol Eds.) # 2010 Elsevier B.V All rights reserved 18 CHAPTER 3 Overview of anatomy and physiology of the ocular motor system Janet C Rucker* Departments of Neurology and. .. depend on the muscle’s origin and terminal insertion, the center of rotation of the eye, and the optical axis of the eye Muscle action may vary depending on the position of the globe in the orbit Each extraocular muscle has a primary direction of action and all but the medial rectus and lateral rectus also have secondary and tertiary directions of action Horizontal eye movements are controlled by the antagonistic... most of the saccule the common cochlear artery, which becomes the vestibulocochlear artery that in turn gives off the posterior vestibular artery The anterior vestibular artery supplies the anterior and lateral semicircular canals, the utricle and a small part of the saccule The posterior vestibular artery runs along the medial aspect of the vestibule supplying the posterior ampulla and most of the. .. Orbital apex and the annulus of Zinn (Figure courtesy of Patrick Lynch and Yale University School of Medicine.) on its anterior half between 5 and 8 mm from the limbus (the border between the cornea and the sclera) The superior and inferior rectus muscles attach slightly medial to the vertical axis of rotation of the eye The superior oblique passes through a rigid ring of connective tissue called the trochlea... global MIF (Figures courtesy of Dr Henry Kaminski.) 23 ends of the muscle and is composed of larger muscle fibers than the orbital layer (Wasicky et al., 2000) The distal ends of the inner global layer insert on the sclera of the globe, while the distal ends of the outer orbital layer end before the sclera and insert at the equator of the globe on fibrous sleeves or rings of collagenous tissue in Tenon’s... artery and the common cochlear artery The latter further divides to form the main cochlear artery that supplies the cochlea and the vestibulocochlear artery and its branch the posterior vestibular artery The anterior vestibular artery supplies the anterior and lateral semicircular canals, the utricle and a small part of the saccule The posterior vestibular artery supplies the posterior canal ampulla and. .. (Gacek, 1969; Goldberg and Fernandez, 1971) In the crista ampullaris of the lateral canal, the kinocilium is located closest to the utricle while in the anterior and posterior canals, the kinocilium is oriented away from the utricular side of the canals In the maculae of the saccule, kinocilia are oriented away from the striola, whereas in the utricle they are oriented toward the striola Mammalian vestibular . Vertigo and Imbalance: Clinical Neurophysiology of the Vestibular System, application of clini cal neurophysiology methods to the series. The multiplicity of both old and new methods of evaluation. tfife@email.arizona.edu (T.D. Fife). Vertigo and Imbalance: Clinical Neurophysiology of the Vestibular System Handbook of Clinical Neurophysiology, Vol. 9 S.D.Z. Eggers and D.S. Zee (Vol. Eds.) # 2010 Elsevier. describe the relationship between the plane of the semicircular canals, the direction of endolymph flow, and how these factors affect the direction of eye movements. Ewald’s laws are: (1) the axis of