PSYCH 212 Chapter Notes - Chapter 2: Cell Nucleus, Axon Terminal, Axon Hillock
11 Jan 2017
School
Department
Course
Professor
Document Summary
The nervous system is composed of cells of neurons glial cells - non neuronal brain cells that provide structural, nutritional, and other types of support to the brain. Neurons and other cells of the brain are structurally, metabolically, and functionally independent synapse - the cellular location at which information is transmitted from a neuron to another cell. There are three general shapes of neurons each specialized for a particular kind of information processing: multipolar neurons. Especially common in sensory systems: unipolar (monopolar) neurons. Single extension that branches in two directions after leaving cell body. Transmits information form body to spinal chord presynaptic postsynaptic. A synapse is typically composed of: presynaptic membrane. Receives information: synaptic cleft - a gap that separates the presynaptic and postsynaptic membrane. Various important substances (ex: enzymes and structural proteins) are conveyed inside the axon from the cell body, where they are produced, to the axon terminals, where they are used axonal transport.
