Collagen Collection (#2)

Human skin anatomy, artwork F008 / 1092
Human skin anatomy, computer artwork

Human skin anatomy, artwork F008 / 0217
Human skin anatomy, computer artwork

Human skin anatomy, artwork F008 / 1098
Human skin anatomy, computer artwork

Human skin anatomy, artwork F008 / 0302
Human skin anatomy, computer artwork

Human skin anatomy, artwork F008 / 1100
Human skin anatomy, computer artwork

Human skin anatomy, artwork F008 / 0301
Human skin anatomy, computer artwork

Human skin anatomy, artwork F008 / 1086
Human skin anatomy, computer artwork

Human skin anatomy, artwork F008 / 1090
Human skin anatomy, computer artwork

Human skin anatomy, artwork F008 / 0199
Human skin anatomy, computer artwork

Human skin anatomy, artwork F008 / 0365
Human skin anatomy, computer artwork

Human skin anatomy, artwork F008 / 0366
Human skin anatomy, computer artwork

Human skin anatomy, artwork F008 / 0198
Human skin anatomy, computer artwork

Human skin anatomy, artwork F008 / 0200
Human skin anatomy, computer artwork

Human skin anatomy, artwork F008 / 0377
Human skin anatomy, computer artwork

Human skin anatomy, artwork F008 / 0299
Human skin anatomy, computer artwork

Human skin anatomy, artwork F008 / 0367
Human skin anatomy, computer artwork

Human skin anatomy, artwork F008 / 1099
Human skin anatomy, computer artwork

Human skin anatomy, artwork F008 / 1084
Human skin anatomy, computer artwork

Human skin anatomy, artwork F008 / 1093
Human skin anatomy, computer artwork

Fractured tendon, SEM F006 / 8643
Fractured tendon, SEM

Fractured tendon, SEM F006 / 8642
Fractured tendon. Coloured scanning electron micrograph (SEM) of a fractured flexor tendon of the finger showing the collagen fibres

Type IV collagen, molecular model F006 / 9511
Type IV collagen, molecular model. Collagen is a long structural protein, formed from amino acids that make up polypeptide strands that twist around each other

Collagen-like molecule F006 / 9264
Collagen-like molecule. Molecular model showing the triple helical structure of a collagen-like molecule

Collagen-like molecule T3-785 F006 / 9252
Collagen-like molecule. Molecular model showing the triple helical structure of the collagen-like molecule T3-785

Retina of the eye, light micrograph C016 / 0528
Retina of the eye. Light micrograph of a section through the retina from a human eye. From top down: nerve fibres of the optic nerve and a blood vessel; several layers of neurons (nerve cells)

Cirrhosis of liver, light micrograph C016 / 0530
Cirrhosis of liver. Light micrograph of a section through liver tissue, damaged by cirrhosis. Cirrhosis occurs as a result of a range of factors causing damage to liver function

Cirrhosis of liver, light micrograph C016 / 0529
Cirrhosis of liver. Light micrograph of a section through liver tissue, damaged by cirrhosis. Cirrhosis occurs as a result of a range of factors causing damage to liver function

Eye muscle, TEM C014 / 1467
Eye muscle. Transmission electron micrograph (TEM) of a section through a striated muscle cell from the ciliary muscle of a human eye

Eye muscle, TEM C014 / 1466
Eye muscle. Transmission electron micrograph (TEM) of a section through a striated muscle cell from the ciliary muscle of a human eye

Intestinal arteriole, TEM
Intestinal arteriole. Transmission electron micrograph (TEM) of a section through an arteriole in the wall of the small intestine. Magnification: x5000 when printed 10 centimetres wide

Cortical bone, SEM C017 / 8496
False-coloured Scanning Electron Micrograph of cortical bone (compact bone). Cortical bone forms the dense, hard outer layer of most bones

Deer antler, SEM
Deer antler. Coloured scanning electron micrograph (SEM) of a transverse section through cortical (compact) bone from the antler of a deer

Periodontal ligament fibres, SEM
Periodontal ligament fibres. Coloured scanning electron micrograph (SEM) of periodontal ligament fibres (red). These fibres, a specialised type of connective tissue

Collagen fibres, TEM
Collagen fibres. Coloured transmission electron micrograph (TEM) of collagen protein fibres. Collagen has a high tensile strength, providing structure and elasticity to skin, tendons

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

False-colour TEM of collagen fibrils

False-colour TEM of collagen fibres
False colour transmission electron micrograph showing fibrils of collagen, the principal component of white connective tissue

Contracted artery, TEM
Contracted elastic artery. Coloured transmission electron micrograph (TEM) of a section through an artery. Red blood cells (erythrocytes) are seen in the lumen (top centre)

Ovarian follicles, light micrograph
Ovarian follicles. Coloured light micrograph of a section through an ovary (orange), showing three primary follicles (pink)

Nerve fibres, TEM
Nerve fibres. Coloured transmission electron micrograph (TEM) of a section through non- myelinated nerve fibres (blue). The fibres are arranged into bundles surrounded by the cytoplasm of Schwann

Ovarian artery, SEM
Ovarian artery. Coloured scanning electron micrograph (SEM) of an ovarian artery that has been freeze-fractured to show internal details

Arteriole, SEM
Arteriole. Coloured scanning electron micrograph (SEM) of a cross-section through a small human artery known as an arteriole. Red blood cells and some fibrin fibres are seen in the central lumen

Tendon fibres, TEM
Tendon fibres, coloured transmission electron micrograph (TEM). A tendon is made up of parallel bundles of collagen fibres

Bone canals, light micrograph
Bone canals. Coloured light micrograph of a section through human compact bone, showing Haversian canals (circular regions). The concentric rings surrounding the Haversian canals are called lamellae

Osteoblasts, TEM
Osteoblasts. Coloured transmission electron micrograph of osteoblasts, bone-producing cells (pink). They contain rough endoplasmic reticulum (RER, dark pink lines), which produces

Fossilised compact bone, SEM
Fossilised compact bone. Coloured scanning electron micrograph (SEM) of a section through fossilised compact bone. This tissue is found in the dense walls of the shafts of bones

Tendon, light micrograph
Tendon. Light micrograph of a transverse section through a tendon showing the parallel collagen fibres. Connective tissue (brown) separates the bundles

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

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Collagen, the building block of our body's connective tissues, plays a crucial role in various biological processes. Under the scanning electron microscope (SEM), collagen fibers appear as intricate networks, resembling delicate artwork (C016 / 9873). One significant function is its involvement in the blood coagulation cascade. It forms a mesh-like structure that aids in clot formation and prevents excessive bleeding. This process can be visualized through captivating illustrations (Collagen synthesis and assembly). In tendons, collagen fibers provide strength and flexibility to support movement. SEM images reveal their organized arrangement, highlighting their importance for maintaining structural integrity. Within eye muscles, transmission electron microscopy (TEM) captures the detailed architecture fibers (C014 / 1468). These fibers contribute to the precise movements required for proper vision. Beyond these microscopic wonders lies a macroscopic world where collagen impacts bone health. In whale bone tissue captured under light micrography, we witness how this protein contributes to the strength and resilience of these majestic creatures. Illustrations depicting human bone formation showcase how collagen scaffolds serve as foundations for healthy bones' growth and development. However, when osteoporosis strikes, osteoclasts take center stage by breaking down bone tissue relentlessly. These destructive osteoclasts are contrasted with another group of cells called osteoblasts who diligently work towards building healthy bones by depositing new layers of collagen-rich matrix. Sadly though, in individuals suffering from osteoporosis or weakened bones due to aging or other factors; osteoclasts erode away more bone than is rebuilt by osteoblasts leading to fragile skeletal structures susceptible to fractures. Understanding the multifaceted roles played by collagen allows us to appreciate its significance not only on a cellular level but also within our bodies as it supports vital functions like blood clotting and maintains strong bones essential for overall well-being.