GENANALABPRELIM

• Cranium


  Also known as the neurocranium, formed by the superior aspect of the skull, enclosing and protecting the brain, meninges, and cerebral vasculature
• Facial bones


  • Zygomatic (2)
  • Lacrimal (2)
  • Nasal (2)
  • Inferior nasal conchae (2)
  • Palatine (2)
  • Maxilla (2)
  • Vomer
  • Mandible
• Fontanelles are membranous gaps between bones in neonates, major ones are frontal fontanelle and occipital fontanelle
• Bones of the skull

  • Cranium
  • Face
• Cranium subdivision

  1. Cranial roof comprised of the frontal, occipital, and two parietal bones

  2. Cranial base comprised of the frontal, sphenoid, ethmoid, occipital, parietal, and temporal bones articulating with the 1st cervical vertebra (atlas), facial bones, and mandible (jaw)
• Sutures are immovable fibrous joints unique to the skull, completely fuse around the age of 20
• Face

  Also known as the viscerocranium, supports the soft tissues of the face, consists of 14 bones including the orbits of the eyes, nasal and oral cavities, and sinuses
• Skull


  A bony structure that supports the face and forms a protective cavity for the brain, comprised of many bones formed by intramembranous ossification and joined by sutures (fibrous joints)
• Sutures of the Skull

  1. Coronal suture fuses frontal bone with two parietal bones

  2. Sagittal suture fuses both parietal bones to each other

  3. Lambdoid suture fuses occipital bone to two parietal bones