Final answer:
Benign Paroxysmal Positional Vertigo (BPPV) is a disorder where calcium carbonate crystals from the utricle migrate into the semicircular canals, causing periods of dizziness.
Step-by-step explanation:
Benign Paroxysmal Positional Vertigo (BPPV) is a disorder where calcium carbonate crystals from the utricle migrate into the semicircular canals. This condition causes periods of dizziness because the hair cells in the semicircular canals will be constantly activated. The movement of the displaced crystals leads to abnormal signals being sent to the brain, resulting in vertigo and dizziness.