Semicircular canals
The semicircular canals are three semicircular interconnected tubes located in the innermost part of each ear, the inner ear. The three canals are the lateral, anterior and posterior semicircular canals. They are the part of the bony labyrinth, a periosteum-lined cavity on the petrous part of the temporal bone filled with perilymph.
Semicircular canals
canalis semicircularis
ductus semicircularis
Each semicircular canal contains its respective semicircular duct, i.e. the lateral, anterior and posterior semicircular ducts, which provide the sensation of angular acceleration and are part of the membranous labyrinth—therefore filled with endolymph.
History[edit]
Jean Pierre Flourens, by destroying the horizontal semicircular canal of pigeons, noted that they continue to fly in a circle, showing the purpose of the semicircular canals.[7]
Coronal section of right temporal bone.
The cochlea and vestibule, viewed from above.
Transverse section through head of fetal sheep, in the region of the labyrinth. X 30.
Position of the right bony labyrinth of the ear in the skull, viewed from above.
