The macula of the saccule is a patch of sensory hair cells on the wall of the saccule, lying roughly vertical. Like the utricle it is covered by an otolithic membrane with crystals.
| Location | Medial wall of the saccule in the vestibule |
|---|---|
| Parts |
|
| Nerve Supply | Vestibular nerve (vestibulocochlear nerve) (saccular branch of inferior division) |
| Blood Supply | Labyrinthine artery (usually from the anterior inferior cerebellar artery) |
Senses vertical linear acceleration such as lifts, jumping and gravity.
Saccular function is tested with cervical vestibular evoked myogenic potentials. Damage contributes to imbalance in Meniere disease and after head injury.
Inner ear disorder with vertigo attacks, fluctuating hearing loss and tinnitus, often affecting the saccule.
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