The outermost part of the ear is called the pinna. The pinna acts like a funnel directing sound waves into the ear canal. The sound waves then travel through the ear canal to the eardrum. The sound waves vibrate the eardrum and the vibrations are transmitted to the middle ear.
The middle ear is made up of the malleus, incus, and stapes bones. These three bones are the smallest in the body and are collectively known as the ossicles. The ossicles amplify and transfer the sound vibrations from the eardrum to the inner ear.
Inner Ear
The inner ear is made up of the semicircular canals and the cochlea. Each part of the inner ear is very different in form and function to the human body.
The semicircular canals are the portion of the ear that helps detect movement and maintain balance. The semicircular canals are filled with fluid, and as we move, it is that fluid that allows us to detect the movement and maintain our balance.
The cochlea houses the organ of Corti. As sound vibrations move through the cochlea, they vibrate the microscopic hair cells found within the organ of Corti. The vibrations of the hair cells trigger electrical impulses sent to the brain from the auditory nerve, allowing us to hear.
Share On: