PSYC 101 Lecture Notes - Lecture 9: Paraplegia, Cortisol, Tetraplegia
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PSYC 101 Full Course Notes
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Central nervous system consists of the spine and the brain. Spine is the brains extension into the body. Peripheral nervous system is branches off the central nervous system. Give one"s body sufficient resources to deal with something (stress etc. ) Directs resources to help deal with the stressors. Parasympathetic division gets one ready to deal, and then bring the body back to normal. The efferent pathway, exists the brain to the rest of the body (brain spine. Motor neurons control movements, attached to muscle fibers act with acetylcholine. Somatosensory division sends signals from the body to the brain (body spine brain) Proprioception: knowing where one"s body is in terms of space. Sensors in the joints, telling the brain where exactly parts of the body are. Pain (nociceptors): fibers that send information to the brain (pull back reflex) Higher parts of the body that are damaged, more risk that the rest of the body is affected.