Skull Base Anatomy Self Test
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Answer to Question 2:

Which of the following statements is false?

The floor of the middle cranial fossa

a. is composed of the greater wing of the sphenoid bone and the squamous portion of the temporal bone
b. is the same as the roof of the infratemporal fossa
c. contains a prominent suture, the sphenosquamous suture
d. contains the petro-occipital fissure
e. contains the foramen spinosum and the foramen ovale

The petro-occipital fissure lies in the floor of the posterior cranial fossa at the junction of the base of the petrous portion of the temporal bone and lateral margin of the clivus (occipital portion).