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UNIT 1 JOINTS
Unit 1 PTAP 125 Winter 2010
8
Biology
Undergraduate 1
02/28/2010

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Term
JOINT CATEGORIES
Definition
Synarthrosis, Amphiarthrosis, Diarthrosis
Term
SYNARTHROSIS
Definition
joints held together by intersseous fibrous and cartilaginous connective tissue, negligible movements
Term
AMPHIARTHROSIS
Definition
joints formed by fibrocartilage and/or hyline cartilage, moderate movement
Term
DIARTHROSIS (SYNOVIAL JOINTS)
Definition
joints helded together by a joint capsule which contains synovial fluid; extensive movement; three categories: uniaxial, biaxial, triaxial
Term
UNIAXIAL
Definition
premits motion around a single axis; hinge, pivot
Term
BIAXIAL
Definition
premits motion around two axes; condyloid, ellipsoid, saddle
Term
TRIAXIAL
Definition
permits motion around three axes; ball and socket, plane
Term
DEGREES OF FREEDOM
Definition
number of planes that a joint is allowed to move in if the joint is in anatomical position
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