Main page/Posterior fossa

Posterior fossa

General

  • The osseus walls of the posterior fossa are formed by the
    • Occipital
    • Temporal
    • Sphenoid bones
      •  
Sphenod Bone Occip. Bone Temp. Bore Occip. Bone Int. Ac. Meatu Jug. Occ p. Candy!
Superior view of the posterior cranial fossa.
  • Only 2 of the 12 pairs of cranial nerves course entirely outside the posterior fossa.
 
Close-up of a human body anatomy AI-generated content may be incorrect.
Nerves and arteries of the posterior fossa

Boundaries

  • Anterior
    • Dorsum sellae
    • Posterior part of the sphenoid bone
    • Clival part of the occipital bone;
  • Posterior
    • Lower portion of the squamosal part of the occipital bone;
  • Laterally each side
    • Petrous and mastoid parts of the temporal bone,
    • Lateral part of the occipital bone.
    • One small part above the temporal bone is formed by the inferior angle of the parietal bone
  • Superiorly
    • Tent
      • Attached along the petrous ridges, roofs the posterior fossa.