PSYB64H3 Chapter Notes - Chapter 3: Motor Neuron, Peripheral Nervous System, Oligodendrocyte
Document Summary
Neurons- a cell of the ns that is specialized for information processing and communication. Glia- cells in the nervous system that support the activities of neurons (10-50 for 1 n) Organelle- small structure within a cell that carries out a specific function (membranes nuclei etc) cell body/ soma- the main mass of the neuron containing the nucleus and organelles. Axons- the branch of a neuron responsible for carrying signals to other neurons. Dendrites- the branch of neuron that general receives information from other neurons. Made up of double layer of phospholipids, fatty molecules that contain phosphate. Permeability- the movement of substances across the cell membrane (ic,ip) Ion channel- protein structure embedded in a cell membrane that allows ions to pass without the use of additional energy. Ion pump-protein structure embedded in the cell membrane that uses energy to move ions across the membrane. Intracellular fluid- fluid inside the cell high k+, low na & cl.
