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Osseous tissue and bone structure
Osseous tissue and bone structure
25
Anatomy
Undergraduate 1
02/17/2014

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Term
Axial skeleton
Definition
Bones of skull, thorax, and vertebral column
Term
Appendicular skeleton
Definition
Bones of the limbs and girdles that attach them to the axial skeleton
Term
Ligaments
Definition
connect bones to other bones
Term
Tendons
Definition
connect muscles to bones
Term
Osteocytes
Definition
Mature bone cells that cannot divide
Term
Osteoblasts
Definition
Produce new bony matrix
Term
Osteoprogenitor cells
Definition
Mesenchymal (stem) cells that produce cells that differentiate into osteoblasts
Term
Osteoclasts
Definition
Remove and remodel bone matrix
Term
Calcium phosphate
Definition
accounts for ~2/3 bone weight
Term
Compact bone
Definition
dense bone that contains parallel osteons (funcational unit)
Term
Spongy bone
Definition
Located where bones not heavily stressed or in many directions
Term
Circumferential lamellae
Definition
Outer and inner surfaces of compact bone layer
Term
Interstitial lamellae
Definition
Fill spaces between osteons
Term
Trabeculae
Definition
struts and plates creating an open network formed by lamellae
Term
Appositional bone growth
Definition
Increases bone diameter of existing bones
Term
Periosteum
Definition
Isolate bone from surrounding tissues, route for blood and nervous supply, actively participate in bone growth and repair
Term
Perforating fibers
Definition
Strongly connect tendons, ligaments, and joint capsules to bone through periosteum
Term
Endosteum
Definition
Incomplete cellular layer lining medullary cavity and covers spongy bone and lines central canals
Term
Endochondral ossification
Definition
Cartilages in the embryo are gradually replaced by bone
Term
Pituitary growth failure
Definition
Reduction in growth hormone leads to reduced epiphyseal cartilage activity and short bones
Term
Achondroplasia
Definition
Epiphyseal cartilage grows unusually slowly(Limbs are short, trunk is normal size)
Term
Gigantism
Definition
Overproduction of growth hormone before puberty
Term
Marfan syndrome
Definition
Excessive cartilage formation at epiphyseal cartilage and causes long, slender limbs
Term
Calcium
Definition
The most abundant mineral in the body
Term
Fracture
Definition
Crack or break due to extreme mechanical stress
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