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What (who) is SACCULE - definition

MEMBRANOUS LABYRINTH IN THE VESTIBULE OF EAR

Rotundus

Saccule

·noun A little sac; specifically, the sacculus of the ear.

saccule

['sakju:l]

(also sacculus 'sakj?l?s)

¦ noun Biology & Anatomy

1. a small sac, pouch, or cyst.

2. the smaller of the two fluid-filled sacs forming part of the labyrinth of the inner ear. Compare with utricle.

Derivatives

saccular adjective

sacculated adjective

sacculation noun

Origin

C18: from L., dimin. of saccus 'sack'.

Macula of saccule

HAIR CELLS SURROUNDED BY SUPPORT CELLS IN THE SACCULE

Macula acustica sacculi; Saccular macula; Macula sacculi; Macula of the saccule

The saccule is the smaller sized vestibular sac (the utricle being the other larger size vestibular sac); it is globular in form, and lies in the recessus sphæricus near the opening of the scala vestibuli of the cochlea. Its anterior part exhibits an oval thickening, the macula of saccule (or saccular macula), to which are distributed the saccular filaments of the acoustic nerve.

https://en.wikipedia.org/wiki/Macula_of_saccule

Wikipedia

Saccule

The saccule is a bed of sensory cells in the inner ear. It translates head movements into neural impulses for the brain to interpret. The saccule detects linear accelerations and head tilts in the vertical plane. When the head moves vertically, the sensory cells of the saccule are disturbed and the neurons connected to them begin transmitting impulses to the brain. These impulses travel along the vestibular portion of the eighth cranial nerve to the vestibular nuclei in the brainstem.

The vestibular system is important in maintaining balance, or equilibrium. The vestibular system includes the saccule, utricle, and the three semicircular canals. The vestibule is the name of the fluid-filled, membranous duct that contains these organs of balance. The vestibule is encased in the temporal bone of the skull.

https://en.wikipedia.org/wiki/Saccule