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