The human ear has three parts - the outer, middle, and inner ear. Sound travels through the outer ear and vibrates the eardrum, causing the middle ear bones to vibrate as well. This movement is transferred to the inner ear, where fluid causes hair cells to bend and send signals through the auditory nerve to the brain for interpretation as sound.

1. THE HUMAN EAR
MR MASOLA

2. STRUCTURE OF THE HUMAN EAR

3. PROCESS OF HEARING
Sound travels into the ear canal and is directed by the pinna.
Auditory canal causes the tympanic membrane (eardrum) to
vibrate. The eardrum vibrates causing the middle bones to vibrate
too. The three bones are called ossicles.
The three ossicless are named:
• Malleus (Hammer)
• Incus (Anvil)
• Stapes (Stirrup

4. CONTINUATION..
• sounds vibrations cause the fluid in the cochlea to move around
in the perilymph and endolymph.
• The movement of the fluid causes the hair cells to bend.
• Hair cells in the cochlea sends information to the organ of corti.
• Organ of corti changes the sound information into a nerve
impulse (language of nerves)
• The auditory nerve sends signals to the brain where the sound
will be interpreted.

5. http://legacy.owensboro.kctcs.edu/gcaplan/anat/images/Image487.gif
.

6. REFERENCE
Barbburckart (2011). Available at: https://www.slideshare.net/barbburckart/the-human-ear-and-
sound [Assessed 02 September 2018]
Manickam Ajay (2016). Available at; https://www.slideshare.net/ajaymanickam87/anatomy-of-
ear-56624807 [Assessed 02 September 2018]