Saccule
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
- Medical encyclopedia article on Saccule
- Wikipedia's article - Saccule
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