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A&P Chapter 6 Skeletal Systems
Skeletal Systems
21
Medical
Undergraduate 2
09/10/2008

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Term
Skeletal System Functions
Definition
Support
Movement
Protection
Mineral reservoir (calcium/Phosphate)
Blood cell formation
Platelets, leukocytes, erythrocytes (200 billion a day)
Term
Axial Skeleton
Definition
Central skeletal system
Term
Appendicular Skeleton
Definition
Appendages
Term
Flat bones
Definition
Surface bigger than the other.

Bones of skull, scapula, sternum
Term
Long Bones
Definition
Most bones in your appendicular skeleton
Term
Short Bones
Definition
Carpels, tarsals
Term
Irregular Bone
Definition
Primary vertebra
Term
Sesamoid Bones
Definition
Patella

Encased in connective tissue
Term
End of Long Bones are referred to as?
Definition
Epiphysis
Term
The middle of a long bone is called?
Definition
Diaphysis
Term
Spongy Bone
Definition
Appearance is spongy, lighter and strong.
Term
Yellow Marrow
Definition
Energy reserve, lipid based substance primarily a fat storage
Term
Perioosteum
Definition
Allows for healing and health of bone. Allows blood vessels to enter bone and allows bone to have a specific enviroment
Term
Haversian's cannel
Definition
Run vertically in bone and allow access for blood supply
Term
Volkmann's canal
Definition
Horizontally running blood vessels
Term
Osteon
Definition
In compact bone forms columns within the bone that form passageway and dissipate force
Term
Lamela
Definition
Dissipates force

Subunit of structure encloses within it osteocytes, living part of the bone. It is made of calcium phosphate
Term
Osteocytes
Definition
Mature Bone cells
Term
Composition of Bone (Matrix)
Definition
Collagen, clycosaminoglycans, calcium phosphate, hydroxyapatite,
Term
Osteoblasts
Definition
A cell that forms new bone
Term
Osteoclasts
Definition
Breaks down bone for Ca+
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