Lexic.us

Definition of Semicircular canal

1. Noun. One of three tube loops filled with fluid and in planes nearly at right angles with one another; concerned with equilibrium.

Medical Definition of Semicircular canal

1. Three membranous semicircular tubes contained in the bony labyrinth of the inner ear. They are concerned with equilibrium and the interpretation of the bodys position in space. The three canals are set anterior, posterior, and lateral, at right angles to each other and are situated superior and posterior to the vestibule. Each canal opens into the vestibule through five openings of which one is common to the anterior and lateral ducts. Each duct has an ampulla at one end within which filaments of the vestibular nerve terminate. Synonym: ductus semicirculares. (12 Mar 2007)

Lexicographical Neighbors of Semicircular Canal

Literary usage of Semicircular canal

Below you will find example usage of this term as found in modern and/or classical literature:

1. Anatomy, Descriptive and Surgical by Henry Gray (1901)
"The superior semicircular canal is vertical in direction, and is placed transversely to ... The posterior semicircular canal, also vertical in direction, ..."

2. Cunningham's Manual of Practical Anatomy by Daniel John Cunningham, Arthur Robinson (1914)
"The superior semicircular canal forms the highest part of the labyrinth. ... The posterior semicircular canal, which is the longest of the three tubes, ..."

3. Quain's Elements of Anatomy by Jones Quain, William Sharpey, Allen Thomson, John G. Cleland (1867)
"1, commencement of the spiral tube of the cochlea ; 2, posterior semicircular canal partially opened, showing its membranous canal and ampulla ; 8, ..."

4. A Text-book of Psychology by Edward Bradford Titchener (1909)
"The quality of the ampullar sensation, at low intensities, is most like that of a diffused pres- F,G Exner<s Model of a semicircular canal. sure. ..."

5. A Treatise on Human Physiology by John Call Dalton (1875)
"Each semicircular canal opens into the vestibule by two orifices, one at each end ; except that the two ... 2 Superior vertical semicircular canal. 3. ..."

6. Equilibrium and Vertigo by Isaac Hampshur Jones, Lewis Fisher (1918)
"(1) After entering the brain-stem the fibres from the horizontal semicircular canal have a distinct and separate pathway from the fibres from the vertical ..."

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