Cochlea Cochlea The cochlea is the part of the inner ear involved in hearing. It is a spiral-shaped cavity in the bony labyrinth, in humans making 2 turns(full) and a 3/4(3 quarters) turn around its axis, the modiolus. A core component of the cochlea is the Organ of Corti, the sensory organ of hearing, which is distributed along the partition separating fluid chambers in the coiled tapered tube of the cochlea. The name cochlea derives . The cochlea (plural is cochleae) is a spiralled, hollow, conical chamber of bone, in which waves propagate from the "base" (near the middle ear and
Stirrup did not have stirrups. It is speculated that stirrups may have been used in China as early as the Han dynasty (206 BC–220 AD); however, verified archaeological evidence of stirrups in this period is scant. Stirrups were used in China at the very latest by the early 4th century AD. A funerary figurine depicting a stirrup dated AD 302 was unearthed from a Western Jin dynasty tomb near Changsha. The stirrup depicted is a mounting stirrup, only placed on one side of the horse, and too short for riding. The earliest reliable representation of a full-length, double-sided riding stirrup was