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

A small canal near the root of the lesser sphenoid wing. Connects cranial cavity and orbit. Separate from the superior orbital fissure.

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

Optic canal: 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.

Optic canal

Foramina & canals

Optic canal

STRUCTURE & FUNCTION

Understand what you see.

A small canal near the root of the lesser sphenoid wing.

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. A small canal near the root of the lesser sphenoid wing
  2. Connects cranial cavity and orbit
  3. Separate from the superior orbital fissure
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.

  • Optic nerve
  • Ophthalmic artery
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 optic canal and justify your identification.
SUGGESTED ANSWER

A small canal near the root of the lesser sphenoid wing. Connects cranial cavity and orbit. Separate from the superior orbital fissure.

02What passes through it?
SUGGESTED ANSWER

Optic nerve (II) and ophthalmic artery with accompanying sympathetic fibres.

03Does oculomotor nerve pass through the optic canal?
SUGGESTED ANSWER

No. III enters the orbit through the superior orbital fissure.

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.