anatomy

 

The ear is divided into 3 parts: the outer ear, the middle ear, and the inner ear. Each part of the ear plays a crucial role in how we hear.

Outer Ear
  • The outer ear consists of the pinna, which is the external component we think of when we hear the word “ear”.
  • It also consists of the ear canal.
  • The pinna collects the sound waves and sends them down the ear canal.
Middle Ear
  • The eardrum separates the outer ear from the middle ear.
  • Vibrations from the eardrum move the malleus, incus, and stapes. Those are the names for the three small bones in the middle ear.
Inner Ear
  • Movements of the bones in the middle ear cause vibrations in the fluid of the inner ear.
  • The inner ear consists of the cochlea, which is the sensory organ for hearing. The cochlea looks like a snail shell.
  • The cochlea contains hair cells which are bathed in fluid. They help transfer sound to the auditory nerve.
  • The auditory nerve is responsible for sending the sound signal up the brainstem to higher regions of the brain, called the auditory cortex.

 

If you have more questions about how your hearing works, feel free to call or email The Hearing Room. We have two hearing clinics located in Oshawa and one hearing clinic located in Stouffville to help serve you better. We hope to hear from you soon!