Semicircular canals
The ampulla of a semicircular duct, with its crista ampullaris, is shown near its union with the utricle. 30X
Vestibule
The ampulla of a semicircular duct, with its crista ampullaris, is shown near its union with the utricle. 30X
Ampulla of semicircular duct
The ampulla of a semicircular duct, with its crista ampullaris, is shown near its union with the utricle. 30X
- Crista ampullaris >
The crista ampullaris is a ridge-like structure that functions similarly to the macula in the utricle and in the saccule. However, in the crista the gelatinous layer forms a cupula that extends across the ampulla to the opposite wall. Changes in acceleration cause deflection of the cupula that stimulate receptor cells and initiate a neural response in CN VIII. Otoliths are absent in the crista.
-- Receptor cells
The crista ampullaris is a ridge-like structure that functions similarly to the macula in the utricle and in the saccule. However, in the crista the gelatinous layer forms a cupula that extends across the ampulla to the opposite wall. Changes in acceleration cause deflection of the cupula that stimulate receptor cells and initiate a neural response in CN VIII. Otoliths are absent in the crista.
-- Cupula
The crista ampullaris is a ridge-like structure that functions similarly to the macula in the utricle and in the saccule. However, in the crista the gelatinous layer forms a cupula that extends across the ampulla to the opposite wall. Changes in acceleration cause deflection of the cupula that stimulate receptor cells and initiate a neural response in CN VIII. Otoliths are absent in the crista.
Connective tissue reticulum >
The connective tissue reticulum suspends the semicircular ducts in the semicircular canals.
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