图472 内耳和前庭蜗神经Internal ear and the vestibulocochlear nerve
图473 膜迷路Membranous labyrinth
图474 耳蜗切面Section of the cochlea
图475 螺旋器（豚鼠内耳，镀银，×400）Spiral organ (inner ear of the guinea pig, silver staining, ×400)
