External auditory canal

A) Organ of hearing
B) Passageway from the outside to the eardrum
C) Interconnecting tunnels in the temporal bone
D) Tiny bones in the middle ear
E) Connecting chambers of inner ear filled with endolymph

External Auditory Canal

The tube that runs from the outer ear to the eardrum, plays a role in directing sound waves from the environment to the tympanic membrane.

Eardrum

The eardrum, also known as the tympanic membrane, is a thin membrane that separates the external ear from the middle ear and vibrates in response to sound waves.

Temporal Bone

A bone of the skull located at the side and base of the skull, housing structures of the ear and supporting facial muscles.