Lecture on the Skull Anatomy

Overview

• Dr. B's approach: breaking the skull anatomy into different views
• Focus areas:
  • Anterior view
  • Lateral views
  • Superior view
  • Inferior view
  • Sagittal section
• Emphasis on identifying bones and structures

Anterior View of the Skull

Frontal Bone

• Frontal Bone: One of the cranial bones, considered the easiest to identify
  • Frontal Squama: Protrusion on the forehead
  • Supraorbital Margin: Ridge of bone above the eye orbits
  • Supraorbital Foramen: Openings in the supraorbital margins

Eye Orbital Structures

• Superior Orbital Fissure: Located at the back of the eye orbit
• Infraorbital Foramen: Openings inferior to the eye orbit

Nasal Cavity

• Vomer: Inferior part of the nasal septum
• Perpendicular Plate: Superior part of the nasal septum, part of the ethmoid bone
• Ethmoid Bone: Visible in the eye orbit and nasal cavity
• Nasal Conchae:
  • Inferior Nasal Concha
  • Middle Nasal Concha
  • Superior Nasal Concha (less visible)

Facial Bones

• Maxilla: Upper jaw bones, paired
• Lacrimal Bone: Located in the corner of the eye orbit
  • Lacrimal Fossa: Opening in the lacrimal bone
• Nasal Bones: Paired, located at the top bridge of the nose

Mandible

• Mandible: Lower jaw, single solid piece
  • Mental Foramen: Two openings, related to cranial nerve five (trigeminal nerve)

Other Structures

• Zygomatic Bone: Cheekbone, lateral to the maxilla
• Suture Lines: Indicate the boundaries between bones
• Alveolar Processes:
  • Maxilla: Upper jaw
  • Mandible: Lower jaw

Conclusion

• Anterior view covers many of the significant structures
• Next steps include exploring the lateral view of the skull

These notes provide a detailed account of the anterior view of the skull as discussed in the lecture. Further lectures will cover additional views and structures.