Cranial Fossae: Posterior Cranial Fossa

Question 1

What are the contents of the internal acoustic meatus?

Answer 1

Cranial Nerves VII (facial N) and VIII (vestibulocochlear/auditory N)
Nervus Intermedius/Nerve of Wrisberg/Sensory Root of VII and the Motor Root of VII
Vestibular and Cochlear Roots of VIII and the Internal Auditory/Internal Labyrinthine A and V

Question 2

What are the contents of the jugular foramen?

Answer 2

Jugular Bulb
Inferior Petrosal Sinus
Tympanic Body/Tympanic Glomus or Jugular Body/Jugular Glomus
Cranial Nerves IX (glossopharyngeal), X (vagus), XI (spinal accessory)

Question 3

What forms the roof of the posterior cranial fossa?

Answer 3

Tentorium Cerebelli

Question 4

What part of the cerebrum occupies the posterior cranial fossa?

Answer 4

None

The tentorium cerebelli separates the cerebrum into a space above the posterior cranial fossa.

Question 5

What part of the central nerve system occupies the posterior cranial fossa?

Answer 5

Cerebellum
Pons
Medulla Oblongata