Axons and Action Potentials

Related BrainMass Solutions

• Myelin for action potential propagation.

  How will this degradation affect the generation of action potentials? Firstly, consider what myelin does to propagate action potentials in axons.

• EPSPs and IPSPs

  How are graded potentials created, and how are they different from action potentials? 3. Discuss the ion channels that are involved in the generation of an action potential. 4.

• Neurophysiology, nerve, impulses, nerves, neuron, cellular, unit, nervous, system, cell, type, function, membrane, permeability, sodium, depolarization, action, potentil, myelin, fibers, sheath, myelinated, nodes, Ranvier, saltatory, relative, refractory, period, repolarization, potassium, pump, stimulus, ions, ATP, concentrations, ionic, intracellular

  For regular conduction of action potentials in unmyelinated axons, imagine a person who walks by "baby steps" across a stage.

• Topics in Neuroanatomy

  Axons are "leaky" to ions, but action potentials down axons require that ionic gradients inside the axon remain uninterrupted once an action potential begins, in order to make sure the signal gets to the end of the axon.

• Chloride-Conducting Chloride Channel Role in Skeletal Muscle

  For many years Cl- channels have been well studied in neurological systems, where these channels initiate action potentials at synapses, propagate signals along axons and dendrites, and trigger neurotransmitter release and Calcium influx.

• Anatomical features of the neuron

  Both voltage-gate and chemical-gated channels are involved in the neuron action potentials. Action potential is the nerve impulse in a neuron. Only axons of the neuron can generate an action potential.

• Action Potentials and Patch Clamping: Influences on Neuroscience Developments

  http://www.ncbi.nlm.nih.gov/pubmed/24550783 A brief discussion on the implications of the discovery of patch clamping, electrical impulses and action potentials as a means for neurons to communicate.

• Describe the physiology of depolarization and repolarization.

  The action potential is propagated only at the nodes of Ranvier. It hops as an electrical current from one node to the next. This speeds up action potential travel down an axon about 20 fold as compared to axons lacking myelin.

• Factors Affecting Action Potentials

  58525 Factors Affecting Action Potentials Please help with the following problem. What factors determine if action potentials will be generated by a postsynaptics neuron that receives both excitatory and inhibitory input?