semicircular canal

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Related to Semi-circular canal: anterior semicircular canal

semicircular canal

n.
Any of three tubular and looped structures of the inner ear, together functioning in maintenance of the sense of balance in the body.

semicircular canal

One of the three perpendicular tubular hollows, each forming two-thirds of a circle, that extend from the vestibule of the labyrinth in the inner ear. The semicircular canals are the bony shells that contain the similarly shaped semicircular ducts, membranous sensory organs that detect the angular acceleration and the orientation of the head.
See also: canal
References in periodicals archive ?
Firstly, the group with definite peripheral vertigo will have positive signs with some of the following tests: Dix Hallpike test, lateral semi-circular canal (SCC) test, caloric test, HIT, and DVAT.
It is caused by otolith crystals becoming dislodged and floating in a semi-circular canal. As the name implies this is a benign condition with spontaneous resolution in weeks; however, 30% of cases will persist.
"However, it is possible that, ascending, infection to his semi-circular canals, part of the inner ear, made him more susceptible to disorientation when deprived of external visual clues." It also said that a thick bank of fog was a major factor in the crash.
The inner ear comprises the cochlea, the vestibular and cochlear nerves, and the semi-circular canals. It is like a small, pressurized chamber, and surgery is almost impossible in this region because it would destroy function.
The sound, which arrives at the cochlea after the middle ear bones transmit it to the oval window, reverberates through the cochlea and the semi-circular canals. Through this process, it is converted to a signal that nerves can read and sent through the vestibular nerve to the hearing portion of the brain.
As most readers will recognize, the 'spirit level' refers to the semi-circular canals of the inner ear.
There are three semi-circular canals in your inner ear that help you keep your balance.