Wednesday, June 29, 2011

Spiral Ganglion

The spiral ganglion is a ganglion made up of nerve cell bodies and is located in the modiolus of the cochlea. The neurons of the spiral ganglion are bipolar cells which sends axons to form the cochlear nerve which carries sensory acoustic information from the inner ear to the brain. The dendrites of the spiral ganglion make synaptic contact with the base of hair cells in the inner ear. The number of neurons in the spiral ganglion is estimated to be about 35,000–50,000.