Neuronal Axons
Neuronal Axons - Related Videos
01:21
Neurons: The Axon
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2024
Axons are long, cytoplasmic processes of nerve cells capable of propagating electrical impulses known as action potentials. The cytoplasm or axoplasm of an axon contains neurofibrils, neurotubules, small vesicles, lysosomes, mitochondria, and various enzymes, all encased within the axolemma, the plasma membrane of the axon. The axon attaches to the cell body at a cone-shaped elevation called the axon hillock. The initial part of the axon, closest to the hillock, is known as the initial segment.
03:04
Inducing Axonal Varicosities with a Micromechanical Stimulus on Neurons
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2025
This video demonstrates the induction of axonal varicosities by applying micromechanical stimulus on neurons. The system comprises a micropipette attached to a syringe containing buffer via tubing. Using a micromanipulator, the micropipette is positioned above the neurons. Fluid pressure is then applied to induce varicosities in axons.
11:46
Axon Stretch Growth: The Mechanotransduction of Neuronal Growth
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Cited by 30 •
2011
A unique tissue engineering method was developed to elongate numerous nerve fibers in culture by recapitulating axon stretch growth; a form of nervous system growth whereby nerves elongate in conjunction with growth of the enlarging body.
10:58
Fabrication of a Microfluidic Device for the Compartmentalization of Neuron Soma and Axons
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Cited by 14 •
2007
In this video we demonstrate the technique of soft lithography with polydimethyl siloxane (PDMS) which we use to farbricate a microfluidic device for culturing neurons.
11:56
Visualization of the Axonal Projection Pattern of Embryonic Motor Neurons in Drosophila
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Cited by 4 •
2017
This work details a standard immunohistochemistry method to visualize motor neuron projections of late stage-16 Drosophila melanogaster embryos. The filleted preparation of fixed embryos stained with FasII antibody provides a powerful tool to characterize the genes required for motor axon pathfinding and target recognition during neural development.
FAQs
An action potential propagates when changes in the axon’s membrane potential open voltage-gated ion channels. The resulting channel activity carries the electrical signal along the axon rather than leaving it confined to the cell body. This mechanism allows a single neuron to transmit information over its specialized extension toward downstream neurons, muscles, or glands.
Myelin changes how rapidly signals move along an axon by insulating its membrane. Instead of progressing continuously across the entire membrane, the action potential advances between gaps called nodes of Ranvier, a pattern known as saltatory conduction. Comparing myelinated and nonmyelinated axons therefore helps explain why insulation is important for rapid nervous-system communication.
At the axon terminal, the signal changes form: an arriving electrical message causes neurotransmitters to be released across a synapse, creating a chemical message for the next cell. This electrical-to-chemical conversion allows axonal signaling to connect neurons with neurons, muscles, or glands, rather than simply carrying voltage changes indefinitely.
Development examines how axons become part of functional signaling pathways, while regeneration concerns whether damaged axons can support restored communication. Together, these areas connect basic biology with questions about nervous-system repair. Their study can clarify how axonal structure and signaling contribute to normal function and recovery after injury.
Axonal research links the mechanics of electrical transmission, myelin-dependent conduction, and synaptic neurotransmitter release with nervous-system dysfunction. Examining these processes can help investigators understand how communication is affected in neurological disorders. It also identifies biological features that may be relevant to potential repair strategies, while keeping signaling, injury, and regeneration within one research framework.
A useful sequence follows the signal from membrane-potential changes and voltage-gated ion-channel activity, through movement along the axon, to neurotransmitter release at the terminal. Including myelin and nodes of Ranvier adds the conduction-speed dimension. This progression lets researchers relate the electrical event, its transmission, and its final chemical effect.
Injury-focused research examines how damage to axons may disrupt communication across the nervous system and whether regeneration could help restore it. These questions make axons relevant to both cellular biology and neurological research. Findings may support the development of potential repair strategies while improving understanding of how normal signaling depends on intact axonal pathways.