PSYB64H3 Lecture Notes - Dendrite, Motor Neuron, Protein Structure
Document Summary
Action potential: the nerve impulse arising in an axon. Neuron: a cell of the nervous system that is specialized for information processing and communication. Glia: cells in the nervous system that support the activities of neurons. Organelle: a small structure within a cell that carries out a specific function. Cell body/soma: the main mass of a neuron, containing the nucleus and many organelles. Axon: the branch of a neuron usually responsible or carrying signals to other neurons. Dendrite: the branch of a neuron that generally receives information from other neurons. Permeability: a property of a substance that determines the extent to which other substances may pass through it. Ion channel: a protein structure embedded in a cell membrane that allows ions to pass without the use of additional energy. Ion pump: a protein structure embedded in a cell membrane that uses energy to move ions across the membrane.
