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Course: Health and medicine > Unit 8. Lesson 4: Neuron membrane potentials. Neuron resting potential description. Neuron resting potential mechanism. Neuron graded potential description. Neuron graded potential mechanism. Neuron action potential description. Neuron action potential mechanism. Effects of axon diameter and myelination.
Lesson 3: Heart depolarization. Membrane potentials - part 1. Membrane potentials - part 2. Permeability and membrane potentials. Action potentials in pacemaker cells. Action potentials in cardiac myocytes. Resetting cardiac concentration gradients. Electrical system of the heart.
Learn about three main patterns of action potentials in neurons: No Action Potentials Until Excitation: Some neurons don't fire any action potentials until they receive sufficient excitatory inputs. Once excited, they fire a series or 'train' of action potentials. When the excitation ends, they return to a resting state with no action potentials. Regular Firing Rate Neurons: Other neurons fire ...
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Explicação sobre despolarização, hiperpolarização e potenciais de ação no sistema nervoso humano.