KINE 3020 Study Guide - Final Guide: Dorsal Root Ganglion, Spinal Cord, Temporal Lobe

• School: York University
• Department: Kinesiology & Health Science
• Course: KINE 3020
• Professor: Merv Mosher

Document Summary

3 main cns parts = brainstem, cerebral cortex, spinal cord. Medulla: spinal cord extension for head and neck, regulates life support systems. Pons: connection b/w higher brain regions, cerebellum, spinal cord. Midbrain: ctrl of reflexive eye, arm mvmnts. Process sensory info/motor commands->surrounded by association areas. Temporal: hearing, smell, taste, visual perception, speech (left hemisphere). Dorsal-sensory to brain thru dorsal root ganglion. Mn map->functional organization stab wounds->diff areas affected based on location. Action potentials resting potential = -70mv threshold = -55 mv->ap fired (na+ channels open) to +40/60 mv (na+ channels close) all or none, can decrease over distance. Ranvier nodes: gaps in myelin sheath that re-energizes ap. Epsp: more +"ve to depolarize/closer to threshold (na+ channels open). Ipsp: more ve to hyperpolarize/farther from threshold (k+ channels open). Convergence: 1 neuron gets input from others. Divergence: signal splits off to other neurons. Addictive substances increase dopamine in synapse->heighten pleasure.