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Endoneurium Collection

The endoneurium is a crucial component of the peripheral nervous system, responsible for supporting and protecting nerve fibers

Background imageEndoneurium Collection: Myelination of nerve fibres, TEM

Myelination of nerve fibres, TEM
Myelination of nerve fibres. Coloured transmission electron micrograph (TEM) of Schwann cells (blue, with brown nuclei) insulating nerve fibres (axons, pink) with a myelin sheath

Background imageEndoneurium Collection: Myelination of nerve fibres, TEM

Myelination of nerve fibres, TEM
Myelination of nerve fibres. Coloured transmission electron micrograph (TEM) of Schwann cells (red, with blue nuclei) insulating nerve fibres (axons, orange) with a myelin sheath

Background imageEndoneurium Collection: Myelinated nerve, TEM

Myelinated nerve, TEM
Myelinated nerve. Coloured transmission electron micrograph (TEM) of myelinated nerve fibres and Schwann cells. Myelin (purple) is an insulating fatty layer that surrounds nerve fibres (axons)

Background imageEndoneurium Collection: Peripheral nerve, light micrograph

Peripheral nerve, light micrograph
Peripheral nerve. Light micrograph of a section through a peripheral nerve. This is a mixed nerve with myelinated axons (dark blue circles)

Background imageEndoneurium Collection: Myelinated nerve, TEM C016 / 5840

Myelinated nerve, TEM C016 / 5840
Myelinated nerve. Coloured transmission electron micrograph (TEM) of a section through a myelinated nerve fibre and Schwann cell

Background imageEndoneurium Collection: Myelinated nerve, TEM C016 / 5839

Myelinated nerve, TEM C016 / 5839
Myelinated nerve. Coloured transmission electron micrograph (TEM) of a section through a myelinated nerve fibre and Schwann cell

Background imageEndoneurium Collection: Myelinated nerve, TEM C016 / 5838

Myelinated nerve, TEM C016 / 5838
Myelinated nerve. Coloured transmission electron micrograph (TEM) of a section through a myelinated nerve fibre and Schwann cell

Background imageEndoneurium Collection: Myelinated nerve, TEM C016 / 5448

Myelinated nerve, TEM C016 / 5448
Myelinated nerve. Transmission electron micrograph (TEM) of a section through a myelinated nerve fibre and Schwann cell. Myelin (black)

Background imageEndoneurium Collection: Myelinated nerve, TEM C016 / 5370

Myelinated nerve, TEM C016 / 5370
Myelinated nerve. Transmission electron micrograph (TEM) of a section through a myelinated nerve fibre and Schwann cell (centre)

Background imageEndoneurium Collection: Myelinated nerves, SEM C013 / 7142

Myelinated nerves, SEM C013 / 7142
Myelinated nerves. Coloured scanning electron micrograph (SEM) of a section through the sciatic nerve, showing the myelinated nerve fibres (axons)

Background imageEndoneurium Collection: Myelinated nerves, SEM C013 / 7141

Myelinated nerves, SEM C013 / 7141
Myelinated nerves. Coloured scanning electron micrograph (SEM) of a section through the sciatic nerve, showing the myelinated nerve fibres (axons)

Background imageEndoneurium Collection: Myelinated nerves, SEM C013 / 7138

Myelinated nerves, SEM C013 / 7138
Myelinated nerves. Coloured scanning electron micrograph (SEM) of a section through a myelinated nerve fibre (axon, beige, centre) from the sciatic nerve

Background imageEndoneurium Collection: Neural connective tissue, SEM

Neural connective tissue, SEM
Neural connective tissue. Scanning electron micrograph (SEM) of collagen bundles forming the delicate connective tissue called endoneurium

Background imageEndoneurium Collection: Collagen bundles, SEM

Collagen bundles, SEM
Collagen bundles. Scanning electron micrograph (SEM) of collagen bundles from the delicate connective tissue endoneurium. Endoneurium wraps around and between individual nerve fibres (axons)

Background imageEndoneurium Collection: Nerve fibre node, TEM

Nerve fibre node, TEM
Nerve fibre node. Coloured transmission electron micrograph (TEM) of a cross-section through a nerve fibre (axon) at a node of Ranvier

Background imageEndoneurium Collection: Nerve demyelination, TEM

Nerve demyelination, TEM
Nerve demyelination. Coloured transmission electron micrograph (TEM) of a section through a Schwann cell and a nerve fibre, showing the early collapse of its myelin sheath

Background imageEndoneurium Collection: Nerve fibres, SEM

Nerve fibres, SEM
Myelinated nerve fibres, coloured scanning electron micrograph (SEM). The myelin sheath is grey, the axoplasm pink and the endoneurium (connective tissue) yellow

Background imageEndoneurium Collection: Nerve bundle, SEM

Nerve bundle, SEM
Nerve bundle. Coloured scanning electron micrograph (SEM) of a freeze-fractured section through a bundle of myelinated nerve fibres. Myelin sheaths (yellow) can be seen surrounding the axons (blue)

Background imageEndoneurium Collection: Myelinated nerves, SEM

Myelinated nerves, SEM
Myelinated nerves. Coloured scanning electron micrograph (SEM) of a section through myelinated nerve fibres and Schwann cells


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The endoneurium is a crucial component of the peripheral nervous system, responsible for supporting and protecting nerve fibers. Through myelination, these nerve fibers are insulated and able to transmit electrical signals efficiently. In this captivating collection of images captured through transmission electron microscopy (TEM) and light micrograph techniques, we get an up-close look at the intricate details of endoneurium's role in nerve function. In the TEM images, we witness the myelination process in action as thin layers of protective sheaths wrap around individual nerve fibers. These myelinated nerves appear like delicate strands with periodic nodes that enhance signal conduction. The node regions can be observed more closely in separate TEM captures, showcasing their unique structure and importance in maintaining rapid impulse transmission along the fiber. Zooming out from the microscopic world, a light micrograph provides us with a broader view of a peripheral nerve embedded within its surrounding tissue. This image reminds us that while our focus may be on individual components like endoneurium or myelinated nerves, they exist within a complex network that enables communication throughout our body. These stunning visuals serve as reminders of how intricately designed our nervous system is and highlight the significance of structures like endoneurium in ensuring smooth neural communication. As we continue to unravel the mysteries hidden within our own bodies, these glimpses into cellular wonders fuel our curiosity about what lies beneath our skin's surface.