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ANATOMY / REFERENCE GALLERY1 / 3 references
Ethmoid bone: magnified reference view with a numbered learning marker. The complete original plate is available in the next view.
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Ethmoid bone

Light complex bone between the orbits. Has cribriform and perpendicular plates. Ethmoidal labyrinths contain air cells.

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

Ethmoid bone: 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.

Ethmoid bone

Skull bones

Ethmoid bone

STRUCTURE & FUNCTION

Understand what you see.

Light complex bone between the orbits.

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. Light complex bone between the orbits
  2. Has cribriform and perpendicular plates
  3. Ethmoidal labyrinths contain air cells
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 (1)

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

  • Perpendicular plate
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 ethmoid bone and justify your identification.
SUGGESTED ANSWER

Light complex bone between the orbits. Has cribriform and perpendicular plates. Ethmoidal labyrinths contain air cells.

02Which conchae are parts of ethmoid?
SUGGESTED ANSWER

Superior and middle nasal conchae; the inferior concha is a separate bone.

03Why may an ethmoid roof fracture affect smell?
SUGGESTED ANSWER

Olfactory nerve filaments traverse the cribriform plate and can be injured in this region.

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.