PSYCH 7A Lecture Notes - Lecture 3: Axon Terminal, Resting Potential, Myelin

• School: UC-Irvine
• Department: Psychology
• Course: PSYCH 7A
• Professor: lofgren

Document Summary

Sensory neurons: convey impulses from receptors toward the rest of the nervous system carry in. Motor neurons: carry info from the central nervous system out to the muscles and glands carry out. Interneurons: neurons that connect only w/ other neurons, process info that comes from sensory neurons, then relay signals to motor neurons (thinking, processing) Neurons: basic building blocks of the nervous system. Neurons transmit messages throughout the brain and bw the brain and the rest of the body. Action potential : a brief electrical charge that travels down the axon. When simulated, neurons fire impulses called action potential. Neurons are bathed in liquid that is rich in ions . Liquid outside axon has more positive charge. Solution inside the axon has more negative charge. Neurons receive signals from many other neurons. Excitatory: more likely to cause an action potential inside of cell is more positive than outside.