Skeletal System
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28 terms
Terms | Definitions |
|---|---|
 long bone | Ex. Femur |
| short bone | Ex. carpels |
| flat bones | Ex. Skull plates |
| irregular bones | Ex. vertebrae |
| compact bone | dense and looks smooth |
| spongy bone | composed of small needlelike pieces of bone and lots of open space |
| axial skeleton | bones that form the longitudinal axis of the body. (head,vertebrae, ribs) |
| appendicular skeleton | bone of the limbs and girdles |
| diaphysis | shaft of the long bone |
| epiphyses | Ends of the long bone |
| periosteum | covering of a long bone |
| epiphyseal plate | also called growth plates, found between diaphysis and epiphyses at both ends of a long bone |
| Red Marrow | makes blood |
| medullary cavity | opening in long bone where marrow is found |
| Osteon | a central canal and matrix of rings around it |
| osteoblast | bone forming cells |
| osteoclasts | bone destroying cells |
| ossification | bone formation |
| joints | place where bones come together (articulation) |
| fibrous joint | bones held together by fibrous tissue, usually no movement (sutures in skull plates) |
| cartilaginous joint | cartilage between bones, usually a little movement (spinal cord, ribs) |
| synovial joing | joints that have a cavity between them, filled with fluid, usually freely movable (six types) |
| plane joint | (synovial) bones slide (carpels, scapula) |
| hinge joint | (synovial) motion in 1 plane, like a door, (knee, elbow) |
| pivot joint | (synovial) rotates around axis (head) |
| condyloid joint | (synovial) egg shaped, back and forth and side to side (finger) |
| saddle joint | (synovial) convex and concave looking, about same motion as condyloid (Thumb) |
| ball-and=socket joint | (synovial) motion in all directions plus rotation (hip,shoulder) |
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