Skip to main content

Disorders of Synaptic Function: Neuromuscular Junctions and Channelopathies Study Guide

This guide covers the essential concepts of neurophysiology, focusing on the building blocks of the nervous system: neurons and glial cells. It details neuron structure, classification, and the critical role of glial cells. The guide further explains the electrical properties of neurons, including resting membrane potential and the mechanisms of ion channels. Finally, it delves into signal propagation through local and action potentials, and factors influencing conduction velocity. This content

Save this study guide to your study set

Sign up free

Your learning path

Organization and Divisions of the Nervous System

Organization and Divisions of the Nervous System

An overview of the central and peripheral nervous systems, including their functional divisions and major brain regions.

  • organization of the central nervous system
  • organization of the peripheral nervous system
  • somatic nervous system functions
  • autonomic nervous system divisions
  • sympathetic nervous system
  • parasympathetic nervous system
  • enteric nervous system
  • major regions of the brain
  • cerebral hemispheres and lobes
  • brainstem components
  • cerebellum functions
  • diencephalon components

Neurophysiology of Neurons and Glial Cells

Neurophysiology Physical and Electrical Properties

This content describes the structure, function, and interactions of neurons and glial cells, including the propagation and conduction of action potentials.

  • neuron structure
  • glial cells
  • central nervous system
  • peripheral nervous system
  • action potentials
  • resting membrane potential
  • depolarization
  • hyperpolarization
  • axoplasmic transport
  • unipolar cells
  • bipolar cells
  • pseudo-unipolar cells
  • multipolar cells
  • motor neurons
  • sensory neurons
  • interneurons
  • cytoskeletal proteins

Neuronal Electrical Potentials and Signal Propagation

Neurophysiology of Neuronal Electrical Potentials

Neurons function by undergoing rapid changes in electrical potential across the cell membrane through the movement of ions across membrane channels.

  • Propagation of information by neurons
  • Concentration gradient
  • Electrochemical gradient
  • Ion channels
  • Leak channels
  • Voltage-gated channels
  • Ligand-gated channels
  • Modality-gated channels
  • Resting membrane potential
  • Na+/K+ pump
  • Depolarization
  • Hyperpolarization

Neurophysiology of Local and Action Potentials

Local potentials and action potentials involve changes in resting membrane potential through receptor potentials, synaptic potentials, and voltage-gated ion channels.

  • Local potentials
  • Receptor potentials
  • Synaptic potentials
  • Action potentials
  • Depolarization
  • Hyperpolarization
  • Repolarization
  • Temporal summation
  • Spatial summation
  • Voltage-gated Na+ channels
  • Voltage-gated K+ channels
  • Threshold potential
  • Absolute refractory period
  • Relative refractory period
  • Propagation of action potential

Organization and Anatomy of the Nervous System

Organization of the Nervous System

An overview of the central and peripheral nervous systems, including their components, functions, and divisions.

  • Central Nervous System components and functions
  • Peripheral Nervous System components and functions
  • Somatic Nervous System voluntary movement
  • Autonomic Nervous System regulation of homeostasis
  • Sympathetic division of the autonomic nervous system
  • Sensory and motor pathways
  • Integration of sensory information and motor responses

Axon Conduction, Glia, and Demyelinating Diseases

Neurophysiology of Axons and Glia

This content explores how axon diameter, myelination, and saltatory conduction affect action potential propagation, alongside the functions of macroglia and microglia in the nervous system.

  • Action potential propagation
  • Myelination
  • Saltatory conduction
  • Nodes of Ranvier
  • Convergence and divergence
  • Macroglia and Microglia
  • Oligodendrocytes
  • Schwann cells
  • Astrocytes
  • Phagocytosis
  • Neuroinflammation

Neurophysiology of Myelination and Demyelination

This content explores peripheral neuropathy, Guillain-Barré Syndrome, and multiple sclerosis involving demyelination of sensory and motor fibers in the peripheral and central nervous systems.

  • Peripheral nervous system demyelination
  • Guillain-Barré Syndrome
  • Multiple sclerosis
  • Oligodendrocytes
  • Neural stem cells
  • Axon conduction
  • Peripheral neuropathy
  • Central nervous system (CNS)
  • Sensory and motor fibers

Disorders of Synaptic Function

Disorders of Synaptic Function

Diseases affecting the neuromuscular junction and channelopathy involve dysfunction of ion channels and autoimmune attacks on receptors.

  • Channelopathy
  • Neuromuscular junction
  • Voltage gated Ca2+ channels
  • Acetylcholine release
  • Nicotinic receptors
  • Postsynaptic membrane
  • Excitatory postsynaptic potential (EPSP)
  • Inhibitory postsynaptic potential (IPSP)
  • Peripheral nervous system (PNS)

Synaptic Communication and Neurotransmission

Neurotransmitters and Neuromodulators in Neuronal Communication

Neurotransmitters and neuromodulators convey information among neurons by acting on postsynaptic channels or G protein coupled receptors to adjust neuronal activity.

  • neurotransmitters
  • neuromodulators
  • postsynaptic channel
  • G protein coupled receptor
  • secondary messenger
  • ion channels
  • synaptic connections
  • morphological changes

Neurotransmitters, Neuromuscular Junctions, and Channelopathies

Neurotransmitter Antagonists and Spasticity Management

Neurotransmitter agonists and antagonists like Botox affect the central nervous system and neuromuscular junction to treat spasticity and migraines.

  • neurotransmitter agonists
  • neurotransmitter antagonists
  • acetylcholine
  • neuromuscular junction
  • spasticity
  • Botox
  • migraines
  • trigeminal nerve
  • central nervous system
  • muscle strengthening
  • low load prolonged stretches

Make it your own.

Keep these readings and topics in a new study set, or add them to one you already use.

Get started freeLog in