PSY100H1 Lecture Notes - Sympathetic Nervous System, Acetylcholine, Autonomic Nervous System
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PSY100H1 Full Course Notes
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Document Summary
The nervous system controls everything in your body. There are two cells in the nervous system; one called glia, the other neurons. There are those neurons that can do this with signals outside the nervous system. Soma/cell body is where the nucleus is and all the chemical machinery common to most cells. Dendrites are the branched, feeler-like structures that spread out of the soma. Axon transmits signals away from the soma towards other neurons, muscles, or glands. Terminal buttons and synapses/axon terminals secrete chemicals called neurotransmitters. The synapses are located at the same areas; this is a junction where information is transmitted from one neuron to another. Schwann"s cell/myelin sheath is a fatty substance that many axons are wrapped around. Information is received from other cells by the dendrites. It travels through the soma, down the axon, to the terminal buttons where it is passes through to the next cells dendrites.
