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Bone Markings and Joints

Bone Markings and Joints. Do Now. Quiz Corrections Questions pg. 173. Objective. Explore the joints of the body Arthro - Of a joint; relating to the joint EXAMPLE: Arthritis? Inflammation of the joint. Functions. Joints have 2 functions Hold bones together Allow for flexibility

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Bone Markings and Joints

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  1. Bone Markings and Joints

  2. Do Now • Quiz Corrections • Questions pg. 173

  3. Objective • Explore the joints of the body • Arthro- • Of a joint; relating to the joint • EXAMPLE: Arthritis? • Inflammation of the joint

  4. Functions • Joints have 2 functions • Hold bones together • Allow for flexibility • Structural classification • Fibrous • Cartilaginous • Synovial

  5. Functional Classification • Synarthorotic Joints • Amphirarthrotic Joints • Diarthrotic Joints

  6. Synarthrotic Joints • Immovable Joints • Joints of the skull • Sutures of the flat bones that make up the skull

  7. Amphirarthrotic Joints • Slightly Movable Joints • Vertebrae • Don’t have full motion but provide enough motion with in the back

  8. Diarthrotic Joints • Freely moveable • Shoulders • Hips • Knees • Elbows • Lubricated for joint movement • Synovial fluid

  9. Diarthrotic Joints • Ball and Socket Joints • Hip and shoulder • Shoulder is relatively unstable • Golf ball on a golf tee • Hinge Joint • What do you think of with a hinge? • 1 plane of movement • Elbow joint

  10. Diarthrotic Joints • Pivot • What does it mean to pivot? • Allows for rotational movement • Atlas and axis vertebrae • Saddle • Concave/convex articulation • Cowboy sitting on a saddle • Biaxial • Movement in 2 planes, no rotation • Thumb joint • Caropometacarpal joint

  11. Fibrous Joints • Bones joined by fibrous tissue • Some are slightly moveable, most are synarthrotic (no movement) • Sutures – bones interlock and are connected by short tissue fibers • EX:Skull joints

  12. Cartilaginous Joints • Articulating ends connected by cartilage • For the most part, these joints are slightly moveable • EX: Intervertebral joints

  13. Synovial Joints • Articulating bones are separated by joint cavity containing synovial fluid • Movements vary from 1 axis to multiaxial • All synovial joints contain: • Joint surface enclosed by 2 layer articular capsule • Outer part of the capsule is a dense fibrous connective tissue. Lines inside by synovial membrane • Articulating surfaces lined with articular cartilage • Articular capsule reinforced with ligaments, bursae or tendon sheaths

  14. Homework • Read pg. 114 from the packet about “Movements Allowed by Synovial Joints” • Understand diagrams on pg. 115 • Complete pg. 117 from packet

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