Sheath Collection (#6)

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

Skeletal muscle, SEM
Skeletal muscle. Scanning electron micrograph (SEM) of a transverse section through skeletal muscle. The many muscle fibres (red) are seen, along with the elastic sheath (epimysium)

Demyelinated nerve, TEM
Demyelinated nerve. Coloured transmission electron micrograph (TEM) of a section through an axon (a structure that transmits nerve impulses to other nerve cells) that has lost its myelin sheath

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

Demyelinated nerve in multiple sclerosis. Coloured transmission electron micrograph (TEM) of a section through an axon (a structure that transmits nerve impulses) that has lost its myelin sheath

Optical fibre bundle for communications
3D computer artwork of a cable containing optical fibres, split to show its different layers. The optical fibres are in the centre, some of them grouped within coloured outer wrappings

Skeletal muscle fibres, SEM
Skeletal muscle fibres, coloured scanning electron micrograph (SEM). Endomysial connective tissue is green. Magnification: x300 when printed at 10 centimetres wide

Skeletal muscle fibre, SEM
Skeletal muscle fibre. Coloured scanning electron micrograph (SEM) of a section through a muscle fibre

Trigger finger, artwork
Artwork of the anatomy of trigger finger, a condition arising when the sheath surrounding a tendon (blue) in the hand becomes swollen, preventing the tendon from moving smoothly

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)

Flame-resistant cable, with the layers successively cut away to show its structure. Sheathed in fireproof materials, this cable can resist the high temperatures generated during a fire

Eukaryotic flagellum structure, artwork
Eukaryotic flagellum structure. Cutaway artwork showing the internal structure of the flagellum in eukaryotic cells. Flagella are tail-like projections used for cell locomotion

Electrical cables. Each cable is composed of a live, neutral and earth wire, insulated within rubber sheaths. The wires are made from copper, which is an excellent conductor

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

Grass stem, SEM
Grass stem. Coloured scanning electron micrograph (SEM) of a section through a grass stem (family Graminaceae). At upper centre is the vascular bundle

Rubber plant (Ficus elastica) leaf sheath

Swordplay display
Swordplay organised by the famous Abouel-Seyfine and Tcherkes Ryza-Bey

Russian Ladys Hair
A Russian countrywoman grows her hair long, but keeps it under control by confining it within a long embroidered sheath (for want of a better word)

Archer from the Caucasus
A warrior from the Caucasus region in Eurasia (loosely determined by Russia to the North, Iran to the south, the Black Sea to the west and the Caspian sea to the east)

A condom
Ashley Cooper / SpecialistStock

Detail of the gold sheath of one of the kings daggers showing animals in a hunting scene, from the tomb of the pharaoh Tutankhamun, discovered in the Valley of the Kings, Thebes, Egypt, North Africa

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"The Kings' Two Daggers: One with a Blade of Gold, the Other of Iron" In the realm of kings and warriors, two daggers stood as symbols of power. One gleamed with a blade forged from pure gold, radiating opulence and authority. The other possessed an iron edge, representing strength and resilience in battle. These contrasting weapons were not only tools for conquest but also reflections of their wielders' character. Delving deeper into the mysteries of human anatomy, scientists uncovered the intricate process known as myelination. Through Transmission Electron Microscopy (TEM), they captured Picture No. 10876591 - a mesmerizing glimpse into nerve fibers adorned with myelin sheaths that enhance electrical conductivity within our bodies. This microscopic world revealed nature's ingenious design to optimize communication between neurons. Beyond scientific marvels, artists found inspiration in crafting designs for dagger sheaths that transcended mere functionality. A daring creation emerged—a sheath depicting Death itself—an embodiment of mortality juxtaposed against the lethal beauty concealed within. Meanwhile, Regatta and Carnival Week brought joyous festivities to Fowey, Cornwall in August 1993. Amidst vibrant celebrations filled with laughter and merriment, one could almost forget the existence of daggers or their somber purpose. Traveling across borders to Germany's Aachen Cathedral Treasury unveiled Oliphant—a magnificent relic from times long past—its ornate carvings telling tales lost to history while guarding secrets untold. Fashion too had its rendezvous with daggers; Marcus dress advertised Courtelle fabric through an elegant portrayal where sophistication met utility—the perfect fusion for modern women seeking both style and convenience. But let us journey back further still—to medieval England under King Henry III's reign—where three soldiers donned armor bearing witness to countless battles fought on blood-soaked fields; their trusty blades safely nestled within sturdy sheaths at their sides.