Ear

 

Human Ear

The ear is a sensitive organ of the human body. It is mainly involved with detecting, transmitting and transducing sound and maintaining a sense of balance is another important function of the human ear. The human ear includes:

• The outer ear, or the visible part of the ear, is called the pinna.
• Pinna collects sound from the surroundings.
• Sound passes through a tube called an auditory canal.
• Eardrum (tympanic membrane) vibrates in response to incident sound waves.
• Vibrations are amplified and transmitted further by three bones hammer, anvil and stirrup in the middle ear to the inner ear.
• In the inner ear, the cochlea converts pressure signals into electrical signals.
• Electrical signals are transmitted by the auditory nerve to the brain for interpretation.

Diagram of Human Ear