chp 8 - Chapter 8 Joints Joints Point of contact between: 2...

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Chapter 8 Joints
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Joints Point of contact between: 2 bones cartilage and bone teeth and bones
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Types of joints Classification based on movement: immovable = synarthrosis Sutures, teeth in sockets slightly movable = amphiarthrosis intervertebral discs/ pubic symphysis freely movable = diarthrosis* Shoulder, knee
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Diarthrosis joints All are synovial joints Synovial cavity - space btwn. bones allows free movement Bones surrounded by articular cartilage (hyaline) Articular capsule (membrane) surrounds articular cart and synovial cavity Outer layer- fibrous capsule- strength Inner layer – synovial membrane - secretes synovial fluid into cavity
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Fig. 8.1
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Synovial joints 6 types based on: Shapes of articulating surfaces Movements possible
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Planar (Gliding) Joint Bone surfaces are flat Side to side movement only Nonaxial Multiaxial Examples: Clavicle Carpal Tarsal
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Hinge Joint Convex surface of one
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chp 8 - Chapter 8 Joints Joints Point of contact between: 2...

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