PSY100Y5 Chapter Notes - Chapter 3: Myelin, Semipermeable Membrane, Axon Terminal

• School: UTM
• Department: Psychology
• Course: PSY100Y5
• Professor: Dax Urbszat

Document Summary

Chapter 3: the biological basis of behavior: communication in the nervous system, nervous tissue: the basic hardware. Chanaps: 2 major categories for cells in nervous system, glia cells found throughout the nervous system that provide structural support and insulations for neurons. Help maintain the chemical environment of the neurons: neurons- the individual cells in the nervous system that receive, integrate, and transmit info. Insulating material, from glial cells, that encases some neurons. Speeds up transmission of info: multiple sclerosis due to deterioration of myelin sheath. Terminal buttons small knobs that secrete chemicals called neurotransmitters. At end of axons in clusters: synapse point at which neurons connect. Some time is needed before they are ready to open again, and until that time, the neuron cannot fire. Chanaps: followed by a brief relative refractory period. Organization of the nervous system: the peripheral nervous system.