The structure of the vagus nerve

Abstract

TWO FIGURESUsing the pyridine-silver method, Ranson ( '12) found large numbers of sensory unmyelinated fibers in the spinal nerves which he traced to the small cells in the spinal ganglia. He saw the unmyelinated axons of these cells divide in the manner of a Y into a fine branch directed centrally through the dorsal root to the cord and a much thicker branch directed peripherally in the nerve. v. Lenhosshk ( '07) had previously called attention to the small size of these central branches.

Sensory Vagal Nature and Anatomical Access Paths to Esophagus Laminar Nerve Endings in Myenteric Ganglia. Determination by Surgical Degeneration Methods

“…He noted how the descending motor nerve fibres running beside the ganglion occupy a peripheral po sition on one surface only, and are clearly delimited from the neuronal component in the ganglion. Ranson et al [1933] and Mei [1968] confirmed this structure for the no dose ganglion.…”

“…This type of operation was oriented by the work of earlier researchers [Cajal, 1911;Molhant, 1913;Ranson et al, 1933;Dubois and Foley, 1937;De Castro, 1942, 1950, 1951Mohiuddin, 1953;Evans and Murray, 1954;Hoffman and Kuntz, 1957;Rech, 1966;Mei, 1968] who coincided in noting that the neuronal bodies of the no dose ganglion were independent of the motor fiber bundles running along the periphery of the ganglion in fascicles. They also agreed on the sensory nature of these neuronal bodies.…”

“…There can no longer be any doubt that no motor fiber originates in the neuronal bodies of the nodose ganglion, since they all originate from nuclei situated in the brain stem [De Castro, 1950;Evans and Murray, 1954;Hoffmann and Kuntz, 1957], Moreover, it is a fairly well-established fact that the sensorial capacity of the upper part of the digestive tract depends on the neuronal bodies forrnig the nodose ganglion [Molhant, 1913;Ranson et al, 1933;Dubois and Foley, 1937;Evans and Mur ray, 1954], This last point served as a springboard for De Castro [ 1942Castro [ , 1950Castro [ , 1951 who considers those neuronal bodies specifically respon sible for esophageal sensitivity. Finally, more recent work [Andrew, 1956a, b;Iggo, 1957;Mei, 1968Mei, , 1970 with electrophysiological techniques has confirmed this responsibility.…”

La Sagrada Familia of the Human Body: The Anatomical Record Continues Our Exploration of the Unique World of the Cranial Nerves in Volume 2 of Our Special Issue, Cranial Nerves: Morphology and Clinical Significance

“…Others, noting those particularly in our early years, who focused on the detailed morphology or clinical applications of the cranial nerves included: a study authored by no less than four past and future AAA Presidents, G. L. Streeter (AAA President, 1927), N. W. Ingalls, F. P. Mall (AAA President 1906), F. R. Sabin (first woman President of the AAA, 1925), and W. H. Lewis (AAA President, 1935) in our first volume on new approaches in descriptive neurology, particularly of nerves and their nuclei (Streeter et al, ); report by the great neurobiologist J. B. Johnston in our second volume (Johnston, ) on the glossopharyngeal nerve in myxinoids (i.e., hagfish) and his study of cranial nerves by new methods of brain dissection (Johnston, ); Herrick's () examination of the central and peripheral nervous system in phylogeny; McCotter's () study of the vomeronasal nerves and accessory olfactory bulb in the opossum; a study by Bean () on new suggestions for classifications of the “cephalic” nerves (Bean was more notable as a frequent writer about the existence of human races); the detailed study by Hoag on the microanatomy of the sensory root of the trigeminal nerve in rats (Hoag, ); an examination of the structure of the vagus nerve by noted neuroanatomist S. W. Ransom (Ranson and Mihalik, ; Ranson became President of the AAA in 1939); Walker's () study of the dura and contiguous structures on the skull base; the insightful and important study by future Nobel laureate R. W. Sperry on the nature of functional recovery following regeneration of the oculomotor nerve in amphibians (Sperry, ; and Sperry would go on to do seminal split‐brain research that in 1981 led to his receipt of the Nobel Prize along with Hubel and Wiesel).…”

Estudo longitudinal do padrão de vascularização do endoneuro do nervo vago de ratas da linhagem Wistar-Kyoto, em diferentes idades

“…Tabela 1: Valores médios da área fascicular e da área total dos capilares no grupo I Tabela 2: Valores médios da área fascicular e da área total dos capilares no grupo II Tabela 3: Valores médios da área fascicular e da área total dos capilares no grupo III 1927;MEI et al, 1980;RANSON & MIHÁLIK, 1932;RANSON et al, 1933), mas também em humanos (GUO et al, 1987;HOFFMAN & KUNTZ, 1927;KIMACHI et al, 1974;SACHIS et al, 1981;SACHIS et al, 1982;SCHNITZLEIN et al, 1958), ratos (GABELLA & PEASE, 1973;LEGROS & GRIFFITH , 1969;PRECHTL & POWLEY, 1990) e outros animais (FRIEDE & SAMORAJSKI, 1967;HASAN et al, 1993;HEINBECKER & O'LEARY, 1933). (ADAMS, 1942;SUNDERLAND, 1945;1968;LUNDBORG, 1970;.…”