semicircular canal


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Related to semicircular canal: anterior semicircular canal

semicircular canal:

see earear,
organ of hearing and equilibrium. The human ear consists of outer, middle, and inner parts. The outer ear is the visible portion; it includes the skin-covered flap of cartilage known as the auricle, or pinna, and the opening (auditory canal) leading to the eardrum (tympanic
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semicircular canal

[¦sem·i′sər·kyə·lər kə′nal]
(anatomy)
Any of three loop-shaped tubular structures of the vertebrate labyrinth; they are arranged in three different spatial planes at right angles to each other, and function in the maintenance of body equilibrium.
References in periodicals archive ?
In the second classification, Extension of the cholesteatoma was evaluated in terms of isolated parts as well, tympanic cavity (oval window, round window, hypotympan, sinus tympani, and facial recess), mastoid (tegmen tympani, lateral semicircular canal, sinodural angle, and internal auditory canal.
Characteristics and management of superior semicircular canal dehiscence.
9) In their review, these defects were usually located in the external wall of the superior semicircular canal.
Bilateral posterior semicircular canal dehiscences were identified (figure).
Vestibular- evoked myogenic Potentials in patients with dehiscence of the superior semicircular canal.
In these theoretical models, the membranous semicircular canal acts as a hollow torus in which the angular displacement of the endolymph is related to the angular acceleration of the head.
VEMP testing has been used in patients with cerebrovascular accidents, (1) acoustic neuromas, (2) vestibular neuritis, (3) herpes zoster oticus, (3) Meniere disease, (3) and superior semicircular canal dehiscence.
Superior semicircular canal dehiscence (SCD) syndrome is a recognized condition associated with varying degrees of vestibular and auditory dysfunction.
Agenesis of the mastoid antrum has surgical implications because failure to recognize its absence can result in disorientation during mastoid surgery, with potential to injure the lateral semicircular canal and/ or the facial nerve.
In those occasional cases when it is not, you are dealing with cochlear otosclerosis or a semicircular canal dehiscence.