Bodily Injury Claims: Study 3
Skeletal System
Introduction to Bones:
- 206 bones in human skeleton
- Skeleton forms the frame of the body and provides protection for organs
- Also provides framework for soft tissue (skin and muscle)
- Fully developed bones are composed of three main parts:
- Periosteum – membrane over bones. In joints this is called articular cartilage. Periosteum consists of outer layer of fibrous tissue and inner layer of cells called osteoblasts. Osteoblasts lay down new bone if it is injured or affected by certain diseases
- Compact or cortical bone (the cortex) – outer shell of tissue on a bone. Tightly packed layers of bony tissue with spaces containing blood vessels and nerves.
- Medulla – inner part of the bone composed of cancellous bone (or spongy bone). Bone marrow is found in here.