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18.2 Important Terms
Skeletal System- Foundations of Health Science
| Term | Definition |
|---|---|
| ball-and-socket joints | joints that consist of the rounded head of a bone that fits into the cup shaped cavity of another bone |
| cartilage | firm, whitish, flexible connective tissue found in various body parts, including where two bones meet to form a joint |
| condylar joints | joints that can bend, straighten, and move side to side |
| diaphysis | long shaft of a bone between two epiphysis |
| epiphysis | end of a long bone |
| flat bones | thin bones that are effective as a protective shell |
| fontanel | the soft spot on a infant's head where the bones have not grown together |
| foramen | an opening or hole, especially in a bone |
| gliding joint | a joint in which bones slide over each other |
| hinge joints | joints that only bend and straighten or open and close with no side to side movements |
| irregular bones | bones that are a complex shape and contain mostly spongy bone with a covering of compact bone |
| long bones | bones that are longer than they are wide and have a hollow diaphysis |
| ossification | the process of taking calcium from any ingested food and drink and depositing it into cartilage to form bone |
| osteoblasts | specialized bone forming cells that begin the mineralization process |
| osteoclasts | a cell that breaks down bone during physical activity so it can be remodeled into new bone cells |
| pivot joint | a joint that allows movement around a single axis |
| saddle joint | a joint in which one bone forms a shape like a saddle and the other bone fits inside |
| sesamoid bones | small, flat. sesame seed-shaped bones embedded within tendons or joint capsules to withstand friction |
| short bones | bones that are as long as they are wide; are made of spongy bone covered by a layer of compact bone |
| sutured | term that describes the way cranial bones grow together to form a strong and immovable joint |