the image shows a digital rendering of neurons, or nerve cells, interconnected in a network. the neurons are depicted in glowing

neuron neurons nervous system brain neurology neurotransmitter synapse synaptic cleft axon dendrite cell body soma myelin sheath nodes ranvier action potential resting depolarization repolarization hyperpolarization ion channels sodium potassium calcium neuroglia glia astrocytes oligodendrocytes schwann cells microglia ependymal bloodbrain barrier neurogenesis neuroplasticity