21. Humans have semicircular canals , neck muscle " stretch " receptors, and the utricle ( gravity organ ). 22. But the semicircular canals are a more recent innovation, and those are most often blamed for dizziness. 23. The semicircular canals detect angular acceleration. 24. The semicircular canals are filled with endolymph, and also contain an inner membranous sleeve that form semicircular ducts. 25. In living vertebrates, the fluid-filled semicircular canals of the inner ear form the sense organs that control balance. 26. The vestibular system is the region of the inner ear where the semicircular canals converge, close to the cochlea. 27. This syndrome causes the semicircular canals and motion detectors to become extremely sensitive, resulting in disorientation, dizziness, and nausea. 28. The semicircular canals are fluid-filled. 29. The Dix-Hallpike test is a common test performed by examiners to determine whether the posterior semicircular canal is involved. 30. In their natural orientation within the head, the cupulae are located on the medial aspect of the semicircular canals .
