DORSAL COLUMN - MEDIAL LEMNISCAL
Proprioception, Fine touch
Fasciculus gracilis & cuneatus
Lower medulla synapse at nucleus gracilis & cuneatus
Medullary decussation - internal arcuate fibers
Medial lemniscus - VB thalamus - 3, 1, 2 cortex
ANTEROLATERAL SYSTEM - LATERAL SPINOTHALAMIC
Pain, Temperature & Crude Touch
Ascent in dorsolateral fsciculus or synapse at dorsal horn - decussation in ant. white commissure of cord
Spinothalamin/anterolateral tract - VB thal - 3, 1, 2 cortex
Send collaterals to the reticular formation
LATERAL CORTICOSPINAL TRACT - PYRAMIDAL
Fractioned & independent movement/distal flexors
Cerebral cortex 4, 6, 3, 1, 2, 5 - internal capsule - basis pedunculi
diverge at pons - medullary pyramids - decussation of pyramids
90% - lat. corticospinal OR 10% no decussation - anterior corticospinal (cross at cord)
Synapse in ventral/dorsal/intermed horns
Brain

Frontal, Parietal, Occipital and Temporal lobes
Sylvian fissure: marks the upper border of the temporal lobes, separates from parietal lobes
Rolando fissure: (central sulcus) separates frontal from parietal lobes; anterior to it is precentral motor cortex; posterior is postcentral sensory cortex
Gyri: cerebral convolutions
Folia: cerebellar convolutions
Cranial nerves I and II are CNS extensions and myelinated by oligodendrocytes; III-XII are "peripheral" and myelinated by Schwann cells.
Perikarya: neuronal cell bodies
Line of Gennari: prominent myelinated fibers of the visual cortex
Bergmann glia: elongated cerebellar astrocytes
Rosenthal fibers: intracytoplasmic hyaline structure, sometimes corkscrew-shaped, found in pilocytic astrocytomas
Corpora amylacea: PAS+ argyrophilic polyglucosan globules in the terminal processes of astrocytes
Ventricles and CSF
Produced by the choroid plexus in the lateral, 3rd and 4th ventricles.
Foramen of Munro: lateral ventricle to 3rd
Aqueduct of Sylvius: 3rd ventricle to 4th ventricle
Hydrocephalus: increased volume of ventricles with increase in CSF caused by obstruction to CSF flow or cortical atrophy leading to hydrocephalus ex vacuo.