Part of these structures present in all vertebrates is derived from the neuromasts that make up the lateral lines. (-5[1])In amniotes, that part of these structures is the only thing (15[1])to develop from the dorsolateral placode. Parts of these structures develop from the first and second pharyngeal pouches. The Rinne (15[1])and Weber tests can determine whether certain defects in these structures are (*) conductive or neurological. (10[1])In these structures, (10[1])endolymph (10[1])and perilymph are contained (10[1])in the membranous and (15[1])bony labyrinths. (15[2]-5[1])Those parts of these structures (10[1])contain (10[2])the semicircular canals, which (10[1]-5[1])are (10[1])essential (10[1])for maintaining (10[1])balance. (10[1])In these organs, the eighth cranial (10[1])nerve (10[1])is connected to hair (-5[1])cells that respond to different frequencies of vibrations. For 10 points, name this organ containing the cochlea that is (10[2])used for hearing. (10[3])■END■ (10[1])