Structure-Function.org

Skull, cranial cavity

1. Frontal spine
2. Foramen cecum
3. Crista galli
4. Cribriform plate (w/olfactory foramina)
5. Anterior cranial fossa (orbital part)
6. Optic canals
7. Optic groove
8. Hypophyseal fossa (of sella turcica)
9. Dorsum sellae (of sella turcica)
10. Lesser wing
11. Greater wing
12. Foramen rotundum
13. Foramen ovale
14. Foramen spinosum
15. Foramen lacerum
16. Middle cranial fossa (squamous part)
17. Petrous part
18. Internal acoustic meatus
19. Jugular foramen
20. Basilar part (clivus)
21. Hypoglossal canal
22. Foramen magnum
23. Sigmoid sulcus
24. Posterior cranial (cerebellar) fossa
25. Internal occipital protuberance
26. Transverse sulcus

1. Frontal bone (A & E)
2. Ethmoid bone (C & D)
3. Sphenoid bone (F to N)
4. Temporal bone (P to R)
5. Occipital bone (T to Z)

For marking-C, think of the rooster's comb ("Cock-A-Doodle-Doo"). For marking-F, these tunnels allow passage of the optic nerve. For markings L through N, the cowboy named "ROS" can help you identify these foramen. For marking-V, the name of this foramen translates to "large opening" in Latin.