PSYB65H3 Chapter Notes - Chapter 2: Interthalamic Adhesion, Fourth Ventricle, Arachnoid Granulation
Document Summary
Cells of the nervous system: neurons and glia are the specialized cells of the nervous system, glia provide support functions, neurons react and respond to stimuli, basis of behaviour. Learn and store information about their external environment. Can form synapses with other neurons: axon thought of as an information sender, neuron has only one axon. Axon can divide at its far end into many branches. Increasing the number of synapses it can form: long thin fiber or wire that can pass its message along to many different cells simultaneously, covered with insulation myelin. Speed rate of information transfer and to ensure that the message gets to the end of the axon: end of axon is terminal button. Information is sent from the terminal button across the synapse to the dendrite. Perform an essential role in the functioning of the cns. Perform support functions, different types of glia providing different types of support: astrocytes.