Psychology 1000 Chapter Notes - Chapter 3: Otto Loewi, Axon Terminal, Neuroglia

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PSYCH 1000 Full Course Notes
PSYCH 1000 Full Course Notes
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Conducts electrical impulses away from the cell body to other neurons, muscles or glands. Branches out on ends to make axon terminals. Each axon may connect with dendritic branches making it possible for a single neuron to pass messages to as many as. Nerve conduction: an electrochemical process: neurons do 2 important things: Chapter 3 notes: generate electricity, release chemicals, neurons surrounded by positively charged sodium ions. Inside it contains some positively charged potassium ions but also contains negative ions. Inside of neuron is electrically negative in relation to the outside producing an electrical resting potential: polarized: neuron in resting state. The myelin sheath: myelin sheath: during development and increases speed of neural transmission fatty, whitish insulation layer derived from glial cells. In unmyelinated axons, action potential travels down the axon length. Neurotransmitters: neurotransmitters: chemical substances that carry messages across the synapse to either excite other neurons or inhibit their firing, chemical communication involves 5 steps: