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Cranial Cavities (Middle Cranial Fossa (Borders (Anteriorly &…

- - - - Sella Turcica
      - Ant./Post. Clinoid Processes
      - Lesser Wing
    - - Greater Wings
      - Squamous & Petrous parts of Temporal Bones
  - - - Superior Orbital Fissure
        
        Trochlear N. (CN IV)
        
        Ophthalmic Branch of Trigeminal N. (CN V1)
        
        Abducens N. (CN VI)
        
        Oculomotor N. (CN III)
      - Foramen Rotundum
        
        Maxillary Branch of Trigeminal N. (CN V2)
      - Foramen Ovale
        
        Mandibular Branch of Trigeminal N. (CN V3)
      - Foramen Spinosum
        
        Middle Meningeal Artery/Vein & Meningeal Branch of CN V3
    - - Hiatus of the Greater Petrosal N.
        
        Greater Petrosal N. (a branch of Facial N. (CN VII))
      - Hiatus of the Lesser Petrosal N.
        
        Lesser Petrosal N. (branch of Glossopharyngeal (CN IX))
      - Carotid Canal
        
        Internal Carotid Artery
      - Foramen Lacerum
- - - - Frontal Crest: Midline bony ridge
    - - Crista Galli: located midline
      - Cribriform Plate: either side of Crista Galli & supports the Olfactory Bulb
    - - Lesser Wings: separate the anterior & middle cranial fossage
  - - - Anterior Ethmoidal Foramina
        
        Anterior Ethmoidal Artery, Vein, & Nerve
      - Posterior Ethmoidal Foramina
        
        Posterior Ethmoidal Artery, Vein, & Nerve
      - Cribriform Plate
        
        Olfactory N. (CN I)
    - - Optic N. (CN II)
- - - - Medulla Oblongata
      - Pons
      - Midbrain
  - - - Stylomastoid Foramen
        
        Facial N. (CN VII)
      - Internal Acoustic Meatus
        
        Vestibulocochlear (CN VIII)
    - - Foramen Magnum
      - Jugular Foramen
        
        Glossopharyngeal N. (CN IX)
        
        Vagus (CN X)
        
        Spinal Accessory N. (CN XI)
      - Hypoglossal Canal
        
        Hypoglossal N. (CN XII)