| 释义 |
DictionarySeenucleusventral cochlear nucleus
ventral cochlear nucleus A nucleus of the special sensory column in the hindbrain; it forms a bulge around the entering cochlear nerve. Axons of the primary sensory cells in the spiral ganglion (in the cochlea of the inner ear) run in the vestibulocochlear nerve (CN VIII) and synapse in the dorsal and ventral cochlear nuclei. About half of the axons from neurons in the cochlear nuclei cross the midline in a tract called the trapezoid body and join the uncrossed axons from the contralateral cochlear nuclei. Together, these axons ascend in a tract called the lateral lemniscus to synapse in the inferior colliculus in the midbrain. See also: nucleus |