CNS anatomy

Question 1

Parietal and occipital lobes are separated by?

Answer 1

Calcarian sulcus

Question 2

What constitute Diencephalon

Answer 2

Thalamus and pineal region

Question 3

What cranial nerve nuclei are located in mesencephalon/midbrain?

Answer 3

CN III, IV, proprioceptive division of V

Question 4

Which is the only cranial nerve exit dorsally from midbrain?

Answer 4

CN IV Trochlear

Question 5

Which cranial nerve nuclei are located in Pons?

Answer 5

Motor and tactile sensory nuclei for trigeminal nerve

Question 6

Which cranial nerve emerge from lateral surface of pons?

Answer 6

CN V

Question 7

What cranial nerves emerge between pons and medulla?

Answer 7

CN VI, VII, VIII

Question 8

What cranial nerve nuclei are located in medulla?

Answer 8

CN VI, VII, VIII, IX, X, XI, XII

Question 9

cavernous sinus contents

Answer 9

CN III, IV, V1,V2,VI and internal carotid artery. cavernous involvement commonly produces CN VI palsy

Question 10

tumor with propensity to csf spread ebm

Answer 10

pineoblastomamedulloblastomaprimitive neuroectodermal tumorcns lymphomagerm cell tumorATRT

Question 11

CN exits in base of skull: superior orbital fissureforamen rotundumforamen ovale

Answer 11

superior orbital: CN III,IV, VI, V1rotundum: V2ovale: V3

Question 12

CN exits in base of skullforamen spinosum: internal auditory meatusjugular foramenhypoglossal canal

Answer 12

spinosum: middle meningeal artery, and veininternal auditory meatus: CN VII, VIIIjugular foramen: CN IX, X, XIhypoglossal canal: CN XII

Question 13

spinal cord white matter and gray matter distribution

Answer 13

spinal cordwhite matter peripheralgray matter central

Question 14

spinal cord ends at

Answer 14

cord end at L1 in adultconus medullaris ends at L2 in adultsnewborn L3-L4 cord endsdura ends at S2