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Lab 3 - Ex 7 Intro
Bone structure & classification
| Term | Definition |
|---|---|
| long bone | ex: femur |
| short bone | ex: carpals |
| flat bone | ex: parietal |
| irregular bone | ex: sphenoid |
| sesamoid bone | ex: patella |
| sutural bone | small bones within the sutures of the skull |
| axial skeleton | the bones of the head and trunk - skull, spinal column, ribs, and sternum |
| appendicular skeleton | the bones of the appendages - arms, legs, and their attachments |
| osteocyte | a bone cell |
| lacuna | the space that an osteocyte lives in |
| canaliculi | small "canals" between lacuna |
| periosteum | outer layer/covering of bone |
| endosteum | layer lining the medullary cavity in bone |
| Volkmann's canal | "sideways" canals that run between osteons |
| Haversian canal | "up and down" canals in the middle of each osteon |
| concentric lamellae | the layers that make up the osteon |
| circumferential | the layers around the bone's edge |
| interstitial lamellae | the layers that fill in between osteons |
| osteon | the basic unit of bone structure |
| medullary cavity | space in the center of the bone that is filled with marrow |
| perforating fibers | fibers the perforate from the periosteum into the circumferential lamellae |