tunnel /tun·nel/ (tun´el) a passageway of varying length through a solid body, completely enclosed except for the open ends, permitting entrance and exit.
Corti's tunnel.
carpal tunnel the osseofibrous passage for the median nerve and the flexor tendons, formed by the flexor retinaculum and the carpal bones. 
)
Carpal tunnel carrying the tendons of the flexor muscles.
Corti's tunnel inner t.
flexor tunnel carpal t.
inner tunnel a canal extending the length of the cochlea, formed by the pillar cells of the organ of Corti.
tarsal tunnel the osseofibrous passage for the posterior tibial vessels, tibial nerve, and flexor tendons, formed by the flexor retinaculum and the tarsal bones. 
)
Tarsal tunnel.
| Corti's tunnel n. The spiral canal in the ear's spiral organ that is filled with fluid and occasionally crossed by nonmedullated nerve fibers. Also called Corti's canal. |
Corti's tunnel.
See canal of Corti.
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