Osteon Model Flashcards

Study Notes

Bone Anatomy Key Terms

Volkmann's Canals: Connect Haversian canals, allowing blood vessels to travel through compact bone, essential for nutrient supply.
Perforating or Sharpey Fibers: Collagen fibers that anchor the periosteum to the bone, aiding in stability and attachment.
Compact Bone: Dense and solid bone mass, forming the outer layer, providing strength and structural support.
Periosteum: A dense layer of vascular connective tissue that envelops the bones, vital for growth, repair, and overall health.
Outer Circumferential Lamella: Layers of compact bone found at the periphery, contributing to the overall stability of the bone structure.
Osteon: The basic structural unit of compact bone, consisting of a central canal surrounded by concentric lamellae.
Endosteum: A thin vascular membrane lining the inner surface of the bone, involved in bone remodeling and repair.
Inner Circumferential Lamella: Layers located next to the endosteum, helping to maintain bone density and structure.
Lamellae of an Osteon: Concentric rings of bone matrix that contain collagen fibers oriented in different directions, enhancing tensile strength.
Haversian Vessels: Blood vessels located in the central canal of an osteon, providing essential nutrients to bone cells.
Inner Circumferential Lamella Endosteum: A specific section that integrates the endosteum's function with the inner lamellae of the bone structure.
Bone Marrow: Soft tissue found in the medullary cavity of bone, responsible for the production of blood cells.
Trabeculae: The bony framework of spongy bone that forms a lattice-like structure, increasing surface area and reducing weight.
Spongy Bone: Porous bone tissue found internally, aiding in shock absorption and reducing overall bone density.
Canaliculi: Tiny channels that connect lacunae, allowing for communication and nutrient exchange among osteocytes.
Osteocytes in Lacunae: Mature bone cells embedded in small cavities within the bone matrix, critical for maintenance and homeostasis.
Intermediate Lamella: Layers that occur between osteons, contributing to the overall architecture without blood vessel connections.
Central Canal: The core of an osteon containing blood vessels and nerves, facilitating communication within the bone.
Perforating Canal: Channels that run perpendicular to the Haversian canals, linking the vascular networks throughout bone tissue.
Perforating Blood Vessels: Blood vessels passing through the perforating canals, connecting external blood supplies to the bone interior.
Perforating Fibers or Sharpey's Fibers: Fibers anchoring the periosteum, ensuring structural integrity and stability of bone surfaces.