Psychology 2220A/B Study Guide - Neuroglia, Hypothalamus, Schwann Cell
Document Summary
Composed of: gray matter composed of cell bodies and unmyelinated interneurons two dorsal arms, dorsal horns (afferent sensory) two ventral arms, ventral horns (efferent motor) white matter info up to and down from brain surrounding matter composed of myelinated axons (very fatty) this myelin gives it the white appearance spinal nerves: attached to either side of spinal cord at 31 different levels of the spine axons joined to cord via dorsal root: afferent unipolar neurons with cell bodies grouped together: dorsal root ganglia synaptic terminals in dorsal horns. Mesencephalon pons, on brain stem"s ventral surface cerebellum ( little brain ), on dorsal surface controls coordination and some cognitive function cerebral aqueduct: connects third and fourth ventricles tectum (roof), dorsal surface of midbrain inferior colliculi: auditory function superior colliculi: visual function tegmentum: ventral to tectum pariaqueductal gray: pain perception mediates pain reducing effects of opiate drugs substantia nigra: role in parkinson"s red nucleus: role in movement: forebrain.
