PSY100Y5 Chapter Notes - Chapter 3: Peripheral Nervous System, Myelin, Axon Terminal

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

Document Summary

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. Inhibitory psp negative voltage change that decreases the likelihood: reuptake process in which neurotransmitters are sponged up from the synaptic cleft by the presynaptic membrane. Integrating signals: a balancing act: state of a neuron is the weighted balance between excitatory and inhibitory psp"s, neurotransmitters and behavior. Good table 3. 1 common neurotransmitters and their functions: acetylcholine (ach, only transmitter between motor neurons and voluntary muscles, contribute to attention, arousal, and memory, agonist chemical that mimics the action of a neurotransmitter .