Haversian System Collection

Human bone, cross section diagram of Femur showing osteon, veins, marrow

Whale bone tissue, light micrograph

Compact bone. Coloured scanning electron micrograph (SEM) of Haversian canals in compact bone. Bundles of Haversian canals form the core of compact bone

LM of compact bone from a human femur

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

Whale bone sample, light micrograph

Bone structure, artwork
Bone structure, computer artwork. In the interior of the bone is cancellous, or spongy, bone (left), which is found at the ends of long bones and vertebra (spine bones)

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The haversian system, also known as osteons, is a fascinating structure found in human and whale bone tissues. In a cross-section diagram of the femur, we can observe the intricate arrangement of these osteons. They consist of concentric rings called lamellae surrounding a central canal, which houses blood vessels and nerves. When we zoom in using a light microscope on compact bone from both humans and whales, we are amazed by the dense organization of collagen fibers within each lamella. This compact bone provides strength and support to our skeletal system. Through another light micrograph, we get an up-close look at the delicate network of cells that make up bone tissue. These cells work tirelessly to maintain proper bone health and repair any damage that may occur. In an SEM image showcasing the interior of a bone, we witness the complexity beneath its surface. The interconnected channels allow for nutrient exchange between blood vessels and marrow-filled cavities. Even fossils preserve evidence of this remarkable haversian system. An SEM image reveals fossilized compact bone with its distinctive pattern intact—a testament to millions of years' worth of history waiting to be unraveled. Whale bones offer their own unique perspective on this topic. A light micrograph showcases their distinct composition—similar yet different from human bones—as they adapt to life underwater.