The Ear

Overview

The ear enables hearing and balance by converting sound and movement into neural signals. This section introduces the external, middle and inner ear, outlining how each region contributes to sound transmission and equilibrium.

Key Structures

Articles cover the external ear, middle ear ossicles, inner ear structures and the auditory tube. Each topic explains boundaries, functions and key anatomical relationships supported by diagrams and clinical notes.

Clinical Relevance and Learning Focus

Understanding ear anatomy is vital for interpreting hearing loss, vertigo and middle ear infection. The content links structure to function and highlights the importance of anatomy in examination and surgical practice.

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Labeled diagram of the anterior surface of the auricle (pinna) of the external ear.

The External Ear

Labelled diagram of the two main parts of the middle ear: the tympanic cavity and epitympanic recess.

The Middle Ear

Diagram of the components of the membranous labyrinth, highlighting structures relevant to the vestibulocochlear nerve and the inner ear.

The Inner Ear

The Eustachian (Auditory) Tube

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Diagram illustrating the anatomical course of the inferior alveolar and lingual nerves, highlighting their close proximity and the section of the inferior alveolar nerve within the mandibular canal.
Nerves of the Head

The Mandibular Division of the Trigeminal Nerve (CNV3)

by Sam Little

Diagram illustrating cephalic/caudal and ventral/dorsal orientations in embryology.
Anatomical Terminology

Terms of Location in Embryology

by Tamara Chithiramohan

Encyclopaedia

Internal Oblique

by Aren Mnatzakanian