Psychology 1000 Lecture 3: Chapter 3 Discussion Thursday!!!!!

• School: Western University
• Department: Psychology
• Course: Psychology 1000
• Professor: Dr.Mike

Document Summary

2. stimuli: transferred from periphery to brain and reflected back. importance of pineal gland (center of the brain, control hormones) 4. types of nerves(by bell) sensory: afferent fibres (inward) motor:(outward) 5. nerve energy(bell & muller) speed of impulse: there is a limit. Neurons: cells, the basic building blocks of the nervous system. 1. cell body soma: contains biological structures to keep neuron alive. Nucleus carries generic information determining how the cell develop & functions. 2. dendrites: branching fibres, extend from the soma to receiving the message from near neurons & send them to cell body. 3. axon: only have one axon, sending part of neuron conducts electrical impulses away from the cell body to another neurons,muscles or glands. Myelin sheath: not all axon have, but having it means faster transition fatty, whitish insulation developed by glial cells. Nodes of ranvier: myelin sheath the myelin sheath is extremely thin or absent. 4. axon terminals/synaptic knobs: branches connect axon with dendritic branches from numerous neurons.