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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 |