URECHEA

URECHEA

The ear is divided into three parts: the outer ear, the middle ear, and the inner ear. Each section performs its own separate function in a process that converts sound waves into nerve impulses, which are then transmitted to the brain. The outer ear has two parts; the pinna and the external auditory canal. The outer ear collects and channels sound. The middle ear , or tympanic cavity, is a tiny cavity hollowed out of the temporal bone. It is an intermediary in the processing of sound energy. It is responsible for increasing the intensity of incoming sound waves and transforming them into mechanical vibrations that can easily travel through the inner ear. The inner ear has two parts. One is made of bone, the other of a membrane that lies inside the bone. Both have complicated shapes, and for this reason they are called labyrinths. Each labyrinth has three parts: vestibule, semicircular canals, and cochlea. The inner ear contains the receptor cells, which receive the mechanical vibrations and transmit them to the brain.