• foramen singulare
  • Ridge separating the tractus spiralis foraminosus from the area cribrosa media Area cribrosa media, with (7') orifices for nerves to saccule Foramen singulare. (wikipedia.org)
  • duct
  • It consists of an anterior chamber and the cochlear duct, which subserves hearing and connects by way of the round saccule with the peripheral vestibular apparatus. (medscape.com)
  • This duct is joined by the ductus utriculosaccularis, and then passes along the aquæductus vestibuli and ends in a blind pouch saccus endolymphaticus (endolymphatic sac) on the posterior surface of the petrous portion of the temporal bone, where it is in contact with the dura mater. (wikipedia.org)
  • consists
  • The pinna consists of a single piece of elastic cartilage with a complicated relief on its inner surface and a fairly smooth configuration on its posterior surface. (wikipedia.org)
  • bone
  • It is directed superiorly, as per its nomenclature, and posteriorly, nearly parallel to the posterior surface of the petrous bone. (wikipedia.org)
  • it extends to the posterior surface of the petrous portion of the temporal bone. (wikipedia.org)
  • head
  • The initial head tilt to right will cause stimulation of the right utricle resulting in excitory signals to pass to the SR and SO (right eye), and IO and IR (left eye). (wikipedia.org)
  • In case of any lesion from the utricle to the brainstem, diminished input from the affected vestibular pathway, for example the left vestibular is the same as stimulation of right vestibular pathway, resulting in the erroneous interpretation by the brain that the head is tilted to the right and consequently that the SVV is tilted to the left. (wikipedia.org)
  • The saccule translates head movements into neural impulses which the brain can interpret. (wikipedia.org)
  • The saccule, like the utricle, provides information to the brain about head position when it is not moving. (wikipedia.org)
  • surface
  • The anterior surface forms the posterior part of the middle cranial fossa of the base of the skull, and is continuous with the inner surface of the squamous portion, to which it is united by the petrosquamous suture, remains of which are distinct even at a late period of life. (wikipedia.org)
  • The posterior surface forms the anterior part of the posterior cranial fossa of the base of the skull, and is continuous with the inner surface of the mastoid portion. (wikipedia.org)
  • short
  • 1964) and subsequently Townsend and Cody, provided evidence for a short latency response in posterior neck muscles in response to loud clicks that appeared to be mediated by activation of the vestibular apparatus. (wikipedia.org)
  • From the lower part of the saccule a short tube, the canalis reuniens of Hensen, passes downward and opens into the ductus cochlearis near its vestibular extremity. (wikipedia.org)