BIO SCI 93 Lecture Notes - Lecture 26: Calcium Channel, Resting Potential, Cell Membrane

• School: UC-Irvine
• Department: Biological Sciences
• Course: BIO SCI 93
• Professor: Jorge Busciglio Kim Green Marcelo A Wood

Document Summary

Neurons : nerve cells that transfer information in body; uses two types of communication: electrical (long distance) and chemical (short distance) 2 types of nervous system: central and peripheral. Ganglia : clusters of neurons that process info. Information processing : sensory input integration motor output. Synapse : a junction between an exon and another cell: info is transmitted from a ____________ to a _______________, presynaptic cell; postsynaptic cell, most neurons are nourished or insulated by cells called ____________, glia. Astrocytes : supports neurons and form blood-brain barrier. Ependymal cells : promote circulation of cerebrospinal fluid. Microglia : protect the nervous system from microorganisms. Oligodendrocytes and schwann cells : form myelin sheaths around axons: what cell type does the brain tumor arise from, glia; neurons can"t divide themselves. Membrane potential: difference in electrical charge across cell"s plasma membrane: messages are transmitted as ________________, the membrane potential changes. Resting potential: the membrane potential of a neuron not sending signals; about -70 mv.