12. Neuro

Question 1

What CN exits via the cribiform plate?

Answer 1

CN I

Question 2

What CNs exit via the middle cranial fossa (sphenoid bone)?

Answer 2

CN II, III, IV, V, VI

Question 3

What CNs and vessels exit via optic canal?

Answer 3

CN II, opthalmic artery, central retinal vein

Question 4

What CNs and vessels exit via the Superior Orbital Fissure?

Answer 4

CN III, IV, V₁, VI

ophthalmic vein

sympathetic fibers

Question 5

What CN exits via the Foramen Rotundum?

Answer 5

CN V₂

Question 6

What CN exits via the Foramen Ovale?

Answer 6

CN V₃

Question 7

What exits via the Foramen Spinosum?

Answer 7

No CN

Middle meningeal artery

(green on pic)

Question 8

Where does each part of CN V exit?

Answer 8

“Standing Room Only”

CN V₁: Superior Orbital Fissure (do not confuse with Foramen Spinosum)

CN V₂: Foramen Rotundum

CN V₃: Foramen Ovale

Question 9

What CNs exit via the posterior cranial fossa (Temporal or Occipital bones)?

Answer 9

CN VII, VIII (internal auditory meatus),

IX, X, XI (jugular foramen)

XII (hypoglossal canal)

Spinal roots of XI (foramen magnum)

Question 10

What CNs exit via the Internal Auditory Meatus?

Answer 10

CN VII, VIII

Question 11

What CNs and vessels exit via the Jugular Foramen?

Answer 11

CN IX, X, XI

Jugular vein

Question 12

What CNs exit via the Hypoglossal canal?

Answer 12

CN XII

Question 13

What CNs and vessels exit via the Foramen magnum?

Answer 13

Spinal roots of CN XI

Brain stem

Vertebral arteries