PS101 Lecture Notes - Lecture 3: Sympathetic Nervous System, Autonomic Nervous System, Microglia
Document Summary
Neuroscience: the study of the brain and the nervous system. Specialized cells that carry messages throughout the nervous system. Cell assemblies: network of neurons that begin with random connections that end up getting organized to work as an entity. Afferent neurons (sensory): relay information from the senses to the brain and spinal cord (send information to brain and spinal cord) Efferent neurons (motor): send information from the central nervous system to the glands and muscles, enabling the body to move. Internerons: carry information between neutrons in the central nervous system. Cell body: receives information from dendrites, if the stimulus is strong enough, the signal is passed on to axon. Dendrite: receives input from other neurons and sensory receptors. Axons: carries information away to other neurons. Myelin sheath: type of glial cell that covers segments of the axon. Terminal buttons (branches): form junctions with other cells and releases chemicals called neurotransmitters. Glial cells: the other cells in the nervous system.
