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Ch 6
Chapter 6 flash card
25
Anatomy
Not Applicable
10/15/2013

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Term
Axial Skeleton
Definition
126 bones. Bones of skull, thorax, and vertebral column
Term
Appendicular Skeleton
Definition
80 bones. Bones of the limbs and girdles that attach them to the axial skeleton
Term
Functions of the skeletal system
Definition
support, storage of minerals, blood cell production, protection, leverage
Term
Flat bones
Definition
thin roughly parallel surface. Ex: sternum
Term
Sutural bone
Definition
irregular bones formed between cranial bones. number, size and shape vary
Term
Long bones
Definition
relatively long and slender
Term
Irregular bones
Definition
complex shapes. Ex: Facial bone
Term
Seasamoid bones
Definition
small flat. Develop in tendons of knee hands and feet
Term
Short Bones
Definition
Small and boxy, ex: bones of wrist
Term
Canal or Meatus
Definition
large passage way
Term
Process
Definition
Projection or bump
Term
Sinus
Definition
Chamber within bone, usually filled w air
Term
Foramen
Definition
Small rounded passageway
Term
Fissure
Definition
Elongated cleft or gap
Term
Epiphysis
Definition
Resists forces from various directions and directs body weight to diaphysis and joints
Term
Articular Cartilage
Definition
covers portions of epiphysis that form articulations
Term
Diaphysis
Definition
Contains medullary cavity (marrow cavity) filled with marrow
Term
Nutrient Artery/Vein
Definition
commonly on each bone (vascular feature)
Term
Metaphyseal Artery/vein
Definition
Carries blood to/from metaphysis
Term
Osteocytes
Definition
mature bone cells that cannot divide
Term
Osteoblasts
Definition
produce new bony matrix (osteogenesis or ossification)
Term
Osteoprogenitor Cells
Definition
mesenchymal (stem) cells that produce cells that differentiate into osteoblast
Term
Osteoclasts
Definition
Remove and remodel bone matrix
Term
Appositional bone growth
Definition
increases bone diameter of existing bones, does not form original bones
Term
Endosteum
Definition
incomplete cellular layer lining medullary cavity
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