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semicircular canals

semicircular canals The sense organ in vertebrates that is concerned with the maintenance of physical equilibrium (sense of balance). It occurs in the inner ear and consists of three looped canals set at right angles to each other and attached to the utriculus. The canals contain a fluid (endolymph) that flows in response to movements of the head and body. A swelling (ampulla) at one attachment point of each canal contains sensory cells that respond to movement of the endolymph in any of the three planes. These sensory cells initiate nervous impulses to the brain.

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"semicircular canals." A Dictionary of Biology. . Encyclopedia.com. 17 Aug. 2017 <http://www.encyclopedia.com>.

"semicircular canals." A Dictionary of Biology. . Encyclopedia.com. (August 17, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/semicircular-canals

"semicircular canals." A Dictionary of Biology. . Retrieved August 17, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/semicircular-canals

semicircular canals

semicircular canals (sem-i-ser-kew-ler) pl. n. three tubes that form part of the membranous labyrinth of the ear. They are concerned with balance and each canal registers movement in a different plane.

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"semicircular canals." A Dictionary of Nursing. . Encyclopedia.com. 17 Aug. 2017 <http://www.encyclopedia.com>.

"semicircular canals." A Dictionary of Nursing. . Encyclopedia.com. (August 17, 2017). http://www.encyclopedia.com/caregiving/dictionaries-thesauruses-pictures-and-press-releases/semicircular-canals

"semicircular canals." A Dictionary of Nursing. . Retrieved August 17, 2017 from Encyclopedia.com: http://www.encyclopedia.com/caregiving/dictionaries-thesauruses-pictures-and-press-releases/semicircular-canals