FM
- Correct balance requires:
- Accurate sensory information from the eyes, proprioceptive receptors (in the joints) & vestibular labyrinth.
- Accurate coordination of the sensory input by the brain.
- Functional motor output from the CNS to a normal musculoskeletal system.
ENT
Balance System The balance system integrates three main inputs:
- Visual
- Proprioceptive
- Vestibular
Vestibular System
-
Semicircular Canals: Detect angular movements via hair cells and the gelatinous cupula.
(hair cell ►gelatinous cupula ► sheared (angular movements ) ►vestibular nerve .) -
Utricle and Saccule: Detect linear acceleration and gravity via hair cells and the otoconial membrane.
(= hair cell ► otoconial membrane (macula) ► (linear acceleration & pull of the gravity) ► vestibular nerve )
Major Connections of the Vestibular System
- Spinal cord
- Cerebellum
- External ocular muscles