L1: Intro to Neurology

where does decussation in the CNS occur?

-at the medulla oblongata

-one side of the brain controls the other side of the body

what canal does the CN II exit the skull?

-optic canal

which CNs pass through the orbital fissure?

III

IV

VI

V-1

CN V-2 passes through which foramina?

-rostral alar foramen

CN V-3 passes through which foramina?

-oval foramen

CN VII passes through which foramina?

-stylomastoid foramen

which CNs pass through the tympano-occipital fissure?

IX

X

XI

CN XII passes through which foramina?

-hypoglossal canal

CN VII & mastoid process of temporal?

-facial nerve (CN VII) passes through the mastoid segment of the facial canal; thru the temporal bone

-mm attachments for facial expressions

definition:

nucleus pulposus

-inner portion of intervetebral disc

-the soft, squishy inner core

definition:

annulus fibrosus

-outer portion of intervetebral disc

-thick, outer ring (cartilage)

definition:

neurectoderm

-part of ectoderm

-thickened portion of neural plate

-becomes foundation for spinal cord, brain and nn

definition:

primordial ganglion

-early stages of ganglions (nn cell bodies) in embryo

cerebral & cerebellar cortex:

where is grey matter?

-peripheral

all other areas of CNS:

where is grey matter?

-center