BISC 3221 Chapter Notes - Chapter 5: Trochanter, Flat Bone, Tubercle

• School: Fordham University
• Department: Biological Sciences
• Course: BISC 3221
• Professor: Craig Frank

Document Summary

Interstitial lamellae: fill spaces between osteons in compact bone: spongy bone: arranged into parallel struts of branching plates (trabeculae, has lamellae, osteons if trabeculae are thick enough. Intramembranous ossification: bone develops from mesenchyme or fibrous connective tissue: clavicle, mandible, flat bones of face and skull, endochondral ossification: bone replaces existing cartilage model, limbs, vertebral column, bonepers that bear weight. Become filled with spongy bone: epiphysis and diaphysis separated by epiphyseal cartilage (thin layer) invaded on shaft side, replaced with bone as the epiphysis enlarges towards ends of bone length of bone increases. Innervated with sensory nerves: nerve endings in periosteum, penetrate cortex, innervate endosteum, cavity, epiphyses. If bones are stronger, bumps and ridges where tendons attach become larger. Injury and repair: bone can crack/break if subject to stresses or extreme loads bone fracture, healing can occur if blood supply and cellular components of endosteum and periosteum survive, repair will be thicker than initial bone.