PSY 105 Lecture Notes - Lecture 3: Chronic Inflammatory Demyelinating Polyneuropathy, Peripheral Nervous System, Oligodendrocyte

• School: Ryerson University
• Department: Psychology
• Course: PSY 105
• Professor: sarah radtke

Document Summary

Extensions to respond to stimulation and communication. Glial cells: support cells in the nervous system; some digest dead neurons; others provide nutritional support. Sensory neurons: receive info from external world. Motor neurons: carry signals from the spinal cord to muscles to induce movement. Axon: send messages away from the cell body. Axon terminals: contain synaptic vesicles that hold small spheres that contain. Synapse: tiny fluid-filled space between neurons where neurotransmitters travel. Myelin sheath: type of glial cell that is wrapped around axons, like insulators of neuron signal. Chronic inflammatory demyelination polyneuropathy (cidp) - a rare disorder of the peripheral nerves sensory loss and weakness associated with loss of reflexes; caused by damaged to covering of nerves - myelin. Neurons respond to neurotransmitters by generating electrical activity. Action potential - abrupt waves of electric discharge, change in charge inside axon; neuron. Firing all-or-none response; electric signal conducted along an axon to a synapse; positively charged.