High Yield Neuroanatomy

Question 1

failure of the anterior neuropore to close

Answer 1

anencephaly

Question 2

failure of the posterior neuropore to close

Answer 2

spina bifida

Question 3

elongation and herniation of the cerebellar tonsils through the foramen magnum, blocking CSF flow

Answer 3

arnold-chiari

Question 4

dilation of the fourth ventricle d/t failure of the foramina of luschka/magendie to open

Answer 4

dandy-walker

Question 5

failure of midline cleavage of the telencephalon

Answer 5

holoprosencephaly

Question 6

protrusion of the brain through the tentorial incisure - oculomotor paresis and contralateral hemiplegia

Answer 6

uncal hernatino

Question 7

protrusion of brain stem and cerebellum through the foramen magnum
obtundatino and death

Answer 7

tonsillar herniation

Question 8

hernation below the falx cerebri - compression in ACA may result in contralateral leg weakeness

Answer 8

cingulate hernation

Question 9

the anterior spinal artery supplies three structures in the medulla

Answer 9

pyramid
medial lemniscus
root fibers off CNXII