| action potential action potential frequency active transport acute pain receptor afferent afferent division ANS astrocyte autonomic nervous system axoaxonic axon axon hillock bipolar neuron blood-brain barrier brain cell body central nervous system cerebrospinal fluid chemical synapse choroid plexuses CNS concentration concentration gradient conduction speed conscious convergent pathway cortex cranial nerve cytoskeleton dendrite depolarization diffusion divergent pathway dull pain receptor duration effector efferent efferent division electrical insulation electrical stimulus electrical synapse |
endothelium enteric division enzyme ependymal cells equilibrium excitation exocytosis external stimulus extracellular fluid facilitation feedback ganglion graded gradient gray matter homeostasis hyperpolarization inhibition initial segment innervation integration integrator intercellular junction internal stimulus internode intervertebral foramen intracellular fluid involuntary ionic current ligand lipoprotein local potential longitudinal macrophage magnitude maximal mechanical stimulus membrane potential mentality microglia motor |
motor division motor neuron multipolar neuron myelin myelin sheath myelinated axons myelination nerve nerve fiber nervous system neuroglia neurolemmocyte neuromodulator neuron neuronal circuit neuronal pathway neurotransmitter node of Ranvier non-gated channel nonmyelinated axons nucleus oligodendrocyte oscillating circuit parasympathetic division peripheral nervous system permeability plexus PNS postsynaptic cell postsynaptic membrane postsynaptic potential presynaptc potential presynaptic cell presynaptic facilitation presynaptic inhibition presynaptic terminal propagation receptor receptor site relay |
resting membrane potential sacral foramen saltatory conduction satellite cell Schwann cell selectively permeable sensory sensory division sensory input sensory neuron sensory receptor skull foramen sodium-potassium exchange pump somatic motor nervous system spatial summation specificity spinal cord spinal nerves submaximal subthreshold summation supramaximal sympathetic division synapse synaptic cleft temporal summation thermal stimulus threshold tight junctions tract trigger zone Type A fiber Type B fiber Type C fiber unconscious unidirectional unipolar neuron unmyelinated axon voluntary white matter |