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ANATOMY / REFERENCE GALLERY1 / 2 references
Round window: magnified reference view with a numbered learning marker. The complete original plate is available in the next view.
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Round window

Inferior to oval-window region. Closed by secondary tympanic membrane. Related to scala tympani.

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

Round window: magnified reference view with a numbered learning marker. The complete original plate is available in the next view.

Image: OpenStax College · Source / original · CC BY 4.0

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

Round window

Ear

Round window

STRUCTURE & FUNCTION

Understand what you see.

Allows compensatory movement of cochlear fluid.

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. Inferior to oval-window region
  2. Closed by secondary tympanic membrane
  3. Related to scala tympani
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 (3)

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

  • Round-window niche
  • Secondary tympanic membrane
  • Scala tympani
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 round window and give its main role.
SUGGESTED ANSWER

Inferior to oval-window region. Closed by secondary tympanic membrane. Related to scala tympani. Allows compensatory movement of cochlear fluid.

02Why is a second compliant window necessary?
SUGGESTED ANSWER

Inner-ear fluid is effectively incompressible; round-window displacement permits fluid movement when the stapes moves.

03Which membrane closes it?
SUGGESTED ANSWER

The secondary tympanic membrane, distinct from the external tympanic membrane.

04Point out three important relations and explain their significance.
SUGGESTED ANSWER

Round-window niche; Secondary tympanic membrane; Scala tympani. Allows compensatory movement of cochlear fluid. Use the reference plate to locate the region; the relationship map organises the associations and is not drawn to scale.

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.