Tubules Collection

Kidney tubules in section
Kidney tubules. Fluorescent light micrograph of a section through kidney tissue showing numerous tubules (black/green). The tubules are seen in cross-section

Light-sensitive Sea Cucumber (Holothuria impatiens) adult, extruding sticky defensive cuivierian respiratory tubules at night, Manado, Sulawesi, Greater Sunda Islands, Indonesia, March

Brown Sandfish Sea Cucumber (Bohadschia vitiensis) adult, extruding white sticky cuivierian tubules in defensive behaviour, Lembeh Straits, Sulawesi, Sunda Islands, Indonesia, January

Kidney tissue, fluorescence micrograph C016 / 8484
Kidney tissue. Fluorescence deconvolution micrograph of a section through a kidney, showing glomeruli (green), cell nuclei (blue dots), and renal tubules (red, circular)

Intracellular transport, artwork C013 / 4997
Intracellular transport. Computer artwork of vesicles (spheres) being transported from a Golgi body (blue, left) around the cell by microtubules (string-like)

Intracellular transport, artwork C013 / 4995
Intracellular transport. Computer artwork of vesicles (spheres) being transported from a Golgi body (blue, top) around the cell by microtubules (string-like)

Sea Cucumber (Holothuroidea sp. ) adult, extruding white sticky respiratory tubules in defensive action at night
Sea Cucumber (Holothuroidea sp.) adult, extruding white sticky respiratory tubules in defensive action at night, Gam Island, Raja Ampat, West Papua, New Guinea, Indonesia

Leopard Sea Cucumber (Bohadschia argus) adult, extruding white sticky respiratory tubules in defensive action, Pulau Nailaka, Banda, near Ambon Island, Maluku Islands, Banda Sea, Indonesia

Moths interior, SEM
Moths interior. Coloured scanning electron micrograph (SEM) of the trachea and Malpighi tubules of a moth (order Lepidoptera)

Tooth dentine, SEM
Tooth dentine. Coloured scanning electron micrograph (SEM) of dentine from a milk tooth. The bulk of a tooth is formed of dentine, a mineralised connective tissue with a similar composition to bone

Renal collecting tubules. Light micrograph of a section through a healthy human kidney showing the collecting tubules (large ovals, seen end-on)

Kidney tubules in section
Kidney tubules. Fluorescent light micrograph of a section through kidney tissue showing numerous tubules (red/green). The tubules are seen in cross-section

Dentin tooth tissue, SEM
Dentin tooth tissue. Coloured scanning electron micrograph (SEM) of dentin tooth tissue. Dentin is mineralised connective tissue that makes up the majority of a tooth

Kidney tubules, SEM
Kidney tubules. Coloured scanning electron micrograph (SEM) of proximal convoluted tubules (dark brown) in the kidney. The proximal convoluted tubules function to reabsorb water

Cardiac muscle. Coloured scanning electron micrograph (SEM) of heart (cardiac) muscle fibrils (yellow). The membrane around the muscle has been torn (yellow)

Diuretic effect, computer artwork
Diuretic effect. Computer artwork of the effect of diuretics (grey barriers) on a renal tubule (red) inside the kidney. These tubules regulate the levels of chemicals such as sodium (orange)

Seminiferous tubules. Light micrograph of a cross- section through seminiferous tubules in an earthworm (Lumbricus terrestris) testis

Sperm production site, SEM
Sperm production site. Coloured scanning electron micrograph (SEM) of sectioned seminiferous tubules, the sites of sperm production in the human testes

Kidney tubules. Coloured scanning electron micrograph (SEM) of proximal convoluted tubules (dark brown) in the kidney. The proximal convoluted tubules function to reabsorb water

Cardiac muscle, SEM
Cardiac muscle. Coloured scanning electron micrograph (SEM) of a bundle of cardiac muscle fibrils (green) from a healthy heart. Mitochondria (round, orange) supply the muscle cells with energy

Diuretic effect, artwork
Diuretic effect. Computer artwork showing the effect of diuretics (grey barriers) on a renal tubule (red) inside the kidney

Microtubules, artwork
Microtubules, 3D computer artwork. Microtubules are polymers of the protein tubulin. They are a component of the cytoskeleton, which maintains a cells shape

Cytoskeleton, TEM
Cytoskeleton. Coloured transmission electron micrograph (TEM) of the cytoskeleton of a human skin cell. The cell nucleus is at centre right

Protein, microtubules and cell, artwork
3D computer artwork of a protein attached to microtubules, transporting vesicles and other important parts of the cell. Microtubules are polymers of the protein tubulin

Cytoskeleton, SEM
Cytoskeleton. Coloured scanning electron micrograph (SEM) of the cytoskeleton of a human skin cell. The cell nucleus is oval. The rest of the cells contents have been biochemically extracted

Muscle fibre, SEM
Muscle fibre. Coloured scanning electron micrograph (SEM) of a freeze-fractured skeletal (or striated) muscle fibre. The fracturing of the fibre has revealed that it consists of a bundle of smaller

Heart muscle fibres, SEM
Heart muscle fibres. Coloured scanning electron micrograph (SEM) of cardiac muscle fibrils (pink) from a healthy heart. The muscle fibrils, or myofibrils

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"Tubules: The Intricate World of Cellular Structures" In the vast realm of biology, tubules play a crucial role in various organisms. Kidney tubules, for instance, are intricate sections within this vital organ that aid in the filtration and reabsorption processes. These tiny structures ensure the balance of fluids and electrolytes within our bodies. Proteins also rely on microtubules to navigate through cells, acting as highways for intracellular transport. Fascinating artwork captures this complex system, showcasing the beauty hidden within our own bodies. But tubules aren't limited to human anatomy alone; they exist across different species. Take the light-sensitive Sea Cucumber (Holothuria impatiens), which defends itself by extruding sticky cuvierian respiratory tubules when threatened. Similarly, the Brown Sandfish Sea Cucumber (Bohadschia vitiensis) deploys white sticky cuvierian tubules as its defensive mechanism. Fluorescence micrographs provide us with mesmerizing glimpses into kidney tissue's inner workings. These images reveal an intricate network of interconnected tubular structures responsible for maintaining our body's equilibrium. Artwork depicting intracellular transport showcases how essential these microscopic tubes are in ensuring proper cellular function. They act as conduits for molecules and organelles to move seamlessly throughout cells, enabling efficient communication and coordination. Sea cucumbers continue to amaze us with their unique abilities. At nightfall, adult specimens like Holothuroidea sp. , Bohadschia argus, or Bohadschia vitiensis can be seen extruding white sticky respiratory tubules during defensive actions. This remarkable display serves as a reminder of nature's ingenuity and adaptability. From kidneys to sea cucumbers, from fluorescence micrographs to stunning artwork - all these examples highlight just how significant tubular structures are in shaping life on Earth. Their presence underscores both complexity and elegance within biological systems, leaving us in awe of the wonders that lie beneath the surface.