PS101 Lecture Notes - Lecture 5: Monoamine Oxidase, Neuroglia, Reuptake
Document Summary
Specialized cells that carry messages throughout the nervous system. Differ in shape and size and function. Relay information from the senses to the brain and spinal cord. Send information from the central nervous system to the glands and muscles, enabling the body to move. Parts of the neuron (need to know function) Ca(cid:374) i(cid:374) so(cid:373)e (cid:272)ases (cid:862)a(cid:272)t like a (cid:374)eu(cid:396)o(cid:374)(cid:863) Neuron at rest: inside is negatively charged relative to the outside. After brief period (extremely quick): positively charged particles pushed outside neuron, neuron moves back to polarized state. The neuron returns to initial polarized resting state. Intensity is conveyed by the rapidity of firing. Cell can reabsorb neurotransmitters, or they can be used the next time. If neurotransmitter does not make it back to cell, glial cells will degrade it. Some chemicals can fake, or kind of look like the key (ex. medication) Acetylcholine between motor neurons and voluntary muscles. Agonists excite - increase likelihood of firing.
