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A&P Chp. 5 add on I
Anatomy of a Long Bone
| Question | Answer |
|---|---|
| Diaphysis | -shaft of bone -composed of compact bone |
| Epiphysis | -ends of the bone -composed mostly of spongy bone |
| Periosteum | -outside covering of the diaphysis -fibrous connective tissue membrane |
| Perforating (Sharpey's) Fibers | -secure periosteum to underlying bone |
| Arteries | -supply bone cells with nutrients |
| Articular Cartilage | -covers the external surface of the epiphyses -made of hyaline cartilage -decreases friction at joint surfaces |
| Epiphyseal Plate | -flat plate of hyaline cartilage seen in young, growing bone |
| Epiphyseal Line | -remnant of the epiphyseal plate -seen in adult bones |
| Marrow (medullary) Cavity | -cavity inside of the shaft -contains yellow marrow (mostly fat) in adults -contains red marrow for blood cell formation in infants |