Neuroanatomy Flashcards
Three ligaments which need to be punctured in order to access the CSF in a lumbar puncture
Supraspinous
Interspinous
Ligamentum flavum
First palpable vertebra in most people
C7 (vertebra prominens)
Level of termination of the spinal cord
L2- conus medullaris
Primary sensory cortex
Post-central gyrus
Two main sensory pathways
Dorsal columns (fine touch, temperature, proprioception) Spinothalamic tracts (pain, temperature and crude touch)
Decussation/synapse of the sensory pathways
DC- ascends ipsilaterally, crosses at medulla
ST- crosses at level of entry, ascends contralaterally
Primary motor cortex is located…
Pre-central gyrus
Major motor pathway
Corticospinal tracts (lateral and anterior)
Decussation of the CST
Lateral- at the base of the pyramids within the medulla
Anterior-level of entry
Where is the dural venous sinus located?
In between the periosteal and meningeal layers of the dura mater
Describe the blood supply to the brain
a) posterior
b) anterior
a) the vertebral arteries combining to form the basilar;
b) the internal carotids
Where is Broca’s area located? What do lesions here result in?
Frontal lobe, expressive aphasia
Where is Wernicke’s area located? What do lesions here cause?
Temporal lobe;receptive dysphasia
The optic tracts carry information about what?
The contralateral visual field
Area of the brain responsible for voluntary non-tracking movements of the eye
Frontal eye fields
