Saccule

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Saccule

Saccule (pronunciation: sak-yool) is a crucial component of the vestibular system in the inner ear, which is responsible for maintaining balance and spatial orientation in humans and other mammals.

Etymology

The term "saccule" is derived from the Latin word "saccus," meaning "a bag." It is a diminutive form, indicating a small bag or sac.

Function

The saccule plays a vital role in the vestibular system by detecting vertical accelerations and head movements. It contains sensory hair cells that respond to changes in position relative to gravity, thus helping to maintain balance and spatial orientation.

Structure

The saccule is a small, sac-like structure located in the vestibule of the inner ear, near the cochlea. It is filled with a fluid called endolymph and contains a sensory epithelium known as the macula. The macula is covered with hair cells that are sensitive to changes in position and movement.

Related Terms

See Also

External links

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