Cog Sci c127 Midterm 1 exam | Questions and Correct Solutions | Latest Update 2024/2025 | Graded A+

Cog Sci c127 Midterm 1 exam | Questions and Correct Solutions | Latest Update 2024/2025 | Graded A+ The nervous system is composed of what two main classes of cells? What are they? - Answer -Neurons and glial cells -- neurons = the basic signaling units that transmit information through the nervous system -- glial cells = non neural cells that provide structural support and electrical insulation to neurons. Glia are involved in metabolic functions, repair and protection of neurons, and improve conduction of signals What does presynaptic and postsynaptic mean? - Answer -Most neurons are both presynaptic and postsynaptic: they are PRESYNAPTIC when their axon makes a connection onto other neurons, and POSTSYNAPTIC when other neurons make a connection onto their dendrites.What does permeability mean? - Answer -The extent to which a particular ion can cross the membrane through a given ion channel is referred to as its permeability Neuron Anatomy - Answer -Important parts: Soma = cell body Axon = transmitting process Dendrite = receiving process Synapse = gap between neurons Nodes of Ravier = not covered by myelin to aid in saltatory conduc