Neuroanatomy

Question 1

Fluid filled cavity located in the middle of the transverse span of gray matter in spinal cord?

Answer 1

central canal.

Question 2

groove between dorsal column?

Answer 2

dorsal median sulcus

Question 3

Rules for differentiating cervical from thoracic from lumbar vertebrae?

Answer 3

1) Present of lateral horn = T1-L2.
2) Greatest amount of grey matter is in cervical and lumbosacral enlargements (massive innervation)
3) Fasiculi cuneatus and gracilis are BOTH present above T7.
4) cervical vs. lumbosacral enlargement = dorsal horn is narrower at cervical levels than in lumbars.

Question 4

cervical enlargment

Answer 4

C3-T2

Question 5

lumbosacral enlargement

Answer 5

L2-S3

Question 6

internal auditory meatus location

Answer 6

FA 478

Question 7

cranial nerves

Answer 7

FA 477

Question 8

Trick about cranial nerves

Answer 8

CNVII has 2 little paired segments

Question 9

What will MLF syndrome produce?

Answer 9

1) medial rectus palsy on lateral conjugate gaze.
2) *convergence is normal.
3) Abducting eye gets nystagmus (CN VI overtires to stimulate CN III).

Question 10

Lateral medullary syndrome infarct distribution

Answer 10

Fix 110

Question 11

medial medullary syndrome infarct distribution

Answer 11

Fix 110

Question 12

Lateral pontine syndrome distribution

Answer 12

Fix 111

Question 13

arteries in circle of willis in relation to blood vessels

Answer 13

https://www.google.com/search?q=oculomotor+nerve&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiVk8LS7OvLAhUJ_mMKHeCmBcoQ_AUIBygB&biw=1105&bih=501#tbm=isch&q=oculomotor+nerve+circle+of+willis&imgrc=oXL0hT9fAxlosM%3A

Question 14

Aneurysm leading to oculomotor nerve palsy?

Answer 14

Posterior communicating