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True Spinal Nerve
a short segment that extends from the joining of the anterior and posterior roots and the point where the dorsal primary ramus comes off the spinal nerve
pia mater extending from the conus medullaris that attaches to the sacrum to help hold spinal cord in place
fiber tracts that connect one anatomical structure to another; connects cerebellum to brainstem
Decussation of Pyramids
why L side of brain controls R side of body and Rside of brain controls L side of body
(III) arises from the midbrain; extraocculomotor muscles except those innervated by trochlear and abducens
(IV) arises from the midbrain; innervates superior oblique of the eye; *trochlear sling
(V) arises from the pons; 3 parts: opthalamic, maxillary, mandibular; sensation for face and tongue; motor component in mandible for muscles of mastication
(VII) arises from the medulla; mainly involved with facial expression; parasympathetic-secretes saliva(submandib&mandib) and tears(lacrimal gland)
(IX) arises from medulla; skeletal muscle for palat-swallowing; taste for back of tongue
(X) arises from medulla; the wandering nerve; parasympatheticheart, lungs, gut, skeletal contraction of vocal cords; sensorystomach, gut, heart
(XI) arises from the medulla; "spinal nerve" innervates sternocleidomastoid and traps
Posterior Column-Medial Lemniscal (PCML)
fibers cross in the medulla; allows cerebellum to make decisions
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