semicircular canal

noun

: any of three loop-shaped tubular parts of the inner ear that are filled with a watery fluid, are positioned at nearly right angles to each other, and play a role in the maintenance of balance and stabilization by detecting rotations or angular movements of the head

Note: Rotational and angular movements of the head cause the watery fluid in one or more of the semicircular canals to shift so that hair cells at the base of the canals bend and generate electrical signals which are transmitted to the brain by a branch of the auditory nerve.

see ear illustration

Example Sentences

Recent Examples on the Web Paleontologists from the University of Edinburgh analyzed computerized axial tomography (CAT) scans of more than a dozen fossil skulls to study the vestibular system -- the three looping semicircular canals of the inner ear which control balance.

Amy Woodyatt, CNN, 21 Apr. 2020 That system operates as the body’s balance organ; its three semicircular canals are filled with fluid and tiny hair cells that sense in which direction the body is moving.

Heidi Mitchell, WSJ, 15 Aug. 2018 But a tiny semicircular canal in the skull suggests was markedly different from gibbons, reports Dvorsky.

Jason Daley, Smithsonian, 10 Aug. 2017

Medical Definition

semicircular canal

noun

semi·cir·cu·lar canal -ˌsər-kyə-lər- How to pronounce semicircular canal (audio)

: any of the loop-shaped tubular parts of the labyrinth of the ear that together constitute a sensory organ associated with the maintenance of bodily equilibrium, that consist of an inner membranous canal of the membranous labyrinth and a corresponding outer bony canal of the bony labyrinth, and that in all vertebrates above cyclostomes form a group of three in each ear usually in planes nearly at right angles to each other see semicircular duct

单词	semicircular canal
释义	semicircular canal noun : any of three loop-shaped tubular parts of the inner ear that are filled with a watery fluid, are positioned at nearly right angles to each other, and play a role in the maintenance of balance and stabilization by detecting rotations or angular movements of the head Note: Rotational and angular movements of the head cause the watery fluid in one or more of the semicircular canals to shift so that hair cells at the base of the canals bend and generate electrical signals which are transmitted to the brain by a branch of the auditory nerve. see ear illustration Example Sentences Recent Examples on the Web Paleontologists from the University of Edinburgh analyzed computerized axial tomography (CAT) scans of more than a dozen fossil skulls to study the vestibular system -- the three looping semicircular canals of the inner ear which control balance. Amy Woodyatt, CNN, 21 Apr. 2020 That system operates as the body’s balance organ; its three semicircular canals are filled with fluid and tiny hair cells that sense in which direction the body is moving. Heidi Mitchell, WSJ, 15 Aug. 2018 But a tiny semicircular canal in the skull suggests was markedly different from gibbons, reports Dvorsky. Jason Daley, Smithsonian, 10 Aug. 2017 Word History First Known Use 1694, in the meaning defined above Medical Definition semicircular canal noun semi·cir·cu·lar canal -ˌsər-kyə-lər- : any of the loop-shaped tubular parts of the labyrinth of the ear that together constitute a sensory organ associated with the maintenance of bodily equilibrium, that consist of an inner membranous canal of the membranous labyrinth and a corresponding outer bony canal of the bony labyrinth, and that in all vertebrates above cyclostomes form a group of three in each ear usually in planes nearly at right angles to each other see semicircular duct
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semicircular canal

noun

Example Sentences

Word History

Medical Definition

noun