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External acoustic meatus: magnified reference view with a numbered learning marker. The complete original plate is available in the next view.
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External acoustic meatus

Lateral opening of the bony external ear canal. Lies posterior to mandibular fossa. Not the same as the internal acoustic meatus.

Zoom in, then drag to inspect. Keyboard: + / − to zoom, arrows to pan, 0 to reset. Tap the numbered markers to explore parts.

External acoustic meatus: magnified reference view with a numbered learning marker. The complete original plate is available in the next view.

Image: OpenStax College / university open textbook · Source / original · CC BY 4.0

Numbered markers and focused views are Mediveerse learning overlays; the original reference is linked above.

External acoustic meatus

Temporal bone landmarks

External acoustic meatus

STRUCTURE & FUNCTION

Understand what you see.

Lateral opening of the bony external ear canal.

Zoom into the original labels. Practise pointing out each structure, then explain it aloud. Diagrams are teaching references; specimen appearance and slide staining vary.

01 / IDENTIFICATION

How to recognise it.

  1. Lateral opening of the bony external ear canal
  2. Lies posterior to mandibular fossa
  3. Not the same as the internal acoustic meatus
02 / KEY STRUCTURES

Point them out.

Tap a number to open its reference, zoom in and locate the structure. Numbers stay the same across views. This key follows landmarks visible in the reference images.

Related features & study points (2)

Additional relations, attachments or microscopic details to revise alongside this plate. These are separate from its numbered image landmarks.

03 / VIVA PRACTICE

Think first. Then reveal.

Say your answer aloud before opening the suggested response.

Examiner-style prompts: identify the structure, explain its relations, then answer the applied follow-up. These are revision questions, not authenticated past papers.

01Identify external acoustic meatus and justify your identification.
SUGGESTED ANSWER

Lateral opening of the bony external ear canal. Lies posterior to mandibular fossa. Not the same as the internal acoustic meatus.

02Where does the external acoustic canal lead?
SUGGESTED ANSWER

To the tympanic membrane.

03Which nerves pass through internal rather than external acoustic meatus?
SUGGESTED ANSWER

Facial VII and vestibulocochlear VIII, with labyrinthine vessels, enter the internal acoustic meatus.

Read the references.

Credited anatomical plates, microscopy and university teaching references. Individual image credits appear below the viewer. Historical plates can use older terminology; use the lesson text for current names.