Saccule - definition

part of the vestibular system, the saccule is one of the otolith organs and is specialized to detect linear accelerations of the head and head tilts in the vertical plane.

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2-Minute Neuroscience: Vestibular System

Know your brain: Vestibular system

GENERAL STRUCTURE OF THE PART OF THE SACCULE THAT DETECTS HEAD MOVEMENTS. THE CALCIUM CARBONATE CRYSTALS AT THE TOP OF THE STRUCTURE ARE CALLED “OTOCONIA.” WHEN THESE SHIFT IN RESPONSE TO MOVEMENT, IT LEADS TO THE DISPLACEMENT AND ACTIVATION OF HAIR CELLS BELOW. — General structure of the part of the saccule that detects head movements. The calcium carbonate crystals at the top of the structure are called "otoconia." When these shift in response to movement, it leads to the displacement and activation of hair cells below.

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