![This is blank.](https://digitalhistology.org/wp-content/themes/histology-unified/imgs/trans.png)
Peripheral nerve
A longitudinal section of a nerve fascicle, shows several myelinated axons. Two nodes of Ranvier are visible between adjacent internodes of the myelin sheath. The axon can be seen passing through the nodal region; Schwann cell nuclei are visible between vacuolated-appearing myelin sheaths. 1000x
![Axons <p>A longitudinal section of a nerve fascicle, shows several myelinated axons. Two nodes of Ranvier are visible between adjacent internodes of the myelin sheath. The axon can be seen passing through the nodal region; Schwann cell nuclei are visible between vacuolated-appearing myelin sheaths. 1000x</p>](https://digitalhistology.org/wp-content/uploads/2017/05/T.N.PN-8-1-ping.png)
Axons
A longitudinal section of a nerve fascicle, shows several myelinated axons. Two nodes of Ranvier are visible between adjacent internodes of the myelin sheath. The axon can be seen passing through the nodal region; Schwann cell nuclei are visible between vacuolated-appearing myelin sheaths. 1000x
![Myelin sheaths > <p>The myelin sheath is composed of a series of segments called internodes. Each internode consists of multiple, concentric wrappings of the plasma membrane of a single Schwann cell. The myelin membrane is uniquely high in lipid, which provides insulation for the axon and results in increased conduction velocity of the action potential.</p>](https://digitalhistology.org/wp-content/uploads/2017/05/T.N.PN-8-2-ping.png)
Myelin sheaths >
The myelin sheath is composed of a series of segments called internodes. Each internode consists of multiple, concentric wrappings of the plasma membrane of a single Schwann cell. The myelin membrane is uniquely high in lipid, which provides insulation for the axon and results in increased conduction velocity of the action potential.
![Nodes of Ranvier > <p>The node of Ranvier is a specialized region of the axonal plasma membrane located in the gap between adjacent myelin internodes. The node of Ranvier possesses a high concentration of sodium channels, which propagate the action potential.</p>](https://digitalhistology.org/wp-content/uploads/2017/05/T.N.PN-8-3-ping.png)
Nodes of Ranvier >
The node of Ranvier is a specialized region of the axonal plasma membrane located in the gap between adjacent myelin internodes. The node of Ranvier possesses a high concentration of sodium channels, which propagate the action potential.
![Schwann cell nuclei <p>A longitudinal section of a nerve fascicle, shows several myelinated axons. Two nodes of Ranvier are visible between adjacent internodes of the myelin sheath. The axon can be seen passing through the nodal region; Schwann cell nuclei are visible between vacuolated-appearing myelin sheaths. 1000x</p>](https://digitalhistology.org/wp-content/uploads/2017/05/T.N.PN-8-4-ping.png)
Schwann cell nuclei
A longitudinal section of a nerve fascicle, shows several myelinated axons. Two nodes of Ranvier are visible between adjacent internodes of the myelin sheath. The axon can be seen passing through the nodal region; Schwann cell nuclei are visible between vacuolated-appearing myelin sheaths. 1000x