Psychology 2221B Lecture 2: Lecture 2.pdf

• School: Western University
• Department: Psychology
• Course: Psychology 2221B
• Professor: Shelley Cross- Mellor

Document Summary

Chapter 3: the anatomy of the nervous system! The systems, structures, and cells that make up your nervous system! Bring in information from the senses and the internal organs! General layout of the nervous system: central nervous system (cns), peripheral nervous system (pns)! Located outside of the skull and spine! Serves to bring information into the cns and carry signals out of the cns! Afferent nerves (sensory from internal organs to cns)! All are two-stage neural paths - neuron exits cns synapses on a second-stage neuron before the target organ! Sympathetic - synapse close to spinal cord! Parasympathetic - synapse far from spinal cord! Regulates body"s internal environment! sympatheticparasympatheticthoracic and lumbar! !second stage neurons are far from the target organcranial and sacral! !second stage neurons are near the target organ! Most nerves from pns project from spinal cord, but cn project from brain! Numbered i-xii, rostrally (front of brain) to caudally (back of brain)!