PSY100H1 Chapter Notes - Chapter 3.2: Myelin, Endorphins, Resting Potential
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PSY100H1 Full Course Notes
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Document Summary
Psychologists are most concerned with neurons, one of the major types of cells found in the nervous system, that are responsible for sending and receiving messages throughout the body. The primary purpose of neurons is to (cid:862)fire(cid:863), to receive input from one neuron and to then transmit that message onto another neuron. All neurons have a cell body, the part of the neuron that contains the nucleus that houses the cells genetic material. The input is received by dendrites, small branches radiating from the cell body that receive messages from other cells and transmit those messages toward the rest of the cell. The message will travel towards the base of the cell body known as the axon hillock. If the axon hillock receives enough stimulation from other neurons, it will initiate a chemical reaction that will flow down the rest of the neuron.
