PY 101 PY 101
Popular in Intro to Psychology
verified elite notetaker
Popular in Psychology (PSYC)
verified elite notetaker
This 2 page Class Notes was uploaded by Ashley Bartolomeo on Monday August 22, 2016. The Class Notes belongs to PY 101 at University of Alabama - Tuscaloosa taught by TBA in Fall 2016. Since its upload, it has received 15 views. For similar materials see Intro to Psychology in Psychology (PSYC) at University of Alabama - Tuscaloosa.
Reviews for PY 101
Report this Material
What is Karma?
Karma is the currency of StudySoup.
You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!
Date Created: 08/22/16
Lecture 3 Neurons and Neurotransmitters Neurons Neurons: The basic unites of the nervous system Operate through electrical impulses Communicate with other neurons through chemical signals Form neural networks Three basic phases Reception Integration Transmission Three Types of Neurons 1. Sensory- touch, feel 2. Motor- movement ex. Holding a pen 3. Interneuron- local neurons, shorter distance Neuron Structure Reception Dendrite: branchlike extensions of neurons that detects information from other neurons Integration Cell Body (Soma): site in neuron where information from 1000s of other neurons is collected and integrated Axon: long narrow outgrowth of a neuron by which information is transmitted to other neurons Glial Cells: maintain homeostasis, form myelin and provide support and protection for neurons Myelin Sheath: fatty material made up of glial cells that insulates some axons to allow for faster movement of electrical impulses along the axon Node of Ranvier: small gaps of exposed axon, between the segments of myelin sheath, where action potentials take place Terminal Terminal Buttons: at the ends of axons, small nodules that release chemical signals from the neuron into the synapse Synapse: gap between axon of a “sending” neuron and the dendrites of a “receiving” neuron; site where chemical communication between neurons occurs Neurotransmitters: chemical substances that transmit signals from one neuron to another Receptors: in neurons, specialized protein molecules on the postsynaptic membrane; neurotransmitters bind to these molecules after passing across the synapse o The binding of a neurotransmitter with a receptor produces an excitatory or inhibitory signal Action Potentials Resting Membrane Potential: the electrical charge of a neuron when it is not active (polarized) Action Potential (Neural Firing): the electrical signal that passes along the axon and subsequently causes the release of chemicals from the terminal buttons Neurons receive chemical signals from nearby neurons at the dendrites o Excitatory signals depolarize (i.e., increase chance of neural firing) o Inhibitory signals hyperpolarize (i.e., decrease chance of neural firing)
Are you sure you want to buy this material for
You're already Subscribed!
Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'