The bacteria, viruses and insects that live on your skin for the most part are there to prevent disease organisms from growing. 23. The ulna is the medial bone of the forearm and the radius is lateral bone of the forearm. (anatomical position) 24. Label the picture with the correct identifiers Compact bone: D Epiphyseal plate: J Medullary cavity: E Diaphysis: I Letter K as identified above can be seen to be filled with: spongey bone that likely makes up a red marrow compartment within the bone 25. Identify the following structures from the picture. Volkmann's canal: H Osteon or haversian system: B Lacuna: D Fibrous periosteum: G Concentric lamellae: A Marrow cavity: I
