PSY100Y5 Chapter Notes - Chapter 3: Diazepam, Autonomic Nervous System, Temporal Lobe
13
PSY100Y5 Full Course Notes
Verified Note
13 documents
Document Summary
Cells in nervous systems are either: neurons or glia cells. Neurons: individual cells in the nervous system that receive, integrate, and transmit information. Soma/cell body: contain cell nucleus & much of the chemical machinery common to most cells. Dendrites: part of a neuron that is specialized to receive information. Axon: long, thin, fiber that transmits signals away from the soma to other neurons (or muscles, glands) Myelin sheath: insulating material, derived from glial cells, that encases some axons. Terminal buttons: small knobs that secrete chemicals called neurotransmitters. Synapse: a junction where information is transmitted from one neuron to another. Glia: cells found through nervous system which provide various support for neurons: main function to provide support/insulation, also supply nourishment to neurons, help remove waste products, & provide insulation. The neural impulse: using energy to send information. Inside of cell (axon) negative chloride ions (cl-) Resting potential: stable, negative charge when the cell is inactive.
