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Joints. Occur where two bones meetDo they produce the same range of motion?Are they found in only the appendicular skeleton?. Two ways to classify joints. Based on range of motionSynarthrosis, amphiarthrosis, diarthrosisBased on composition of the jointBoney, fibrous, cartilaginous, synovial.
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1. Joints
2. Joints Occur where two bones meet
Do they produce the same range of motion?
Are they found in only the appendicular skeleton?
3. Two ways to classify joints Based on range of motion
Synarthrosis, amphiarthrosis, diarthrosis
Based on composition of the joint
Boney, fibrous, cartilaginous, synovial
4. Synarthrosis (immovable) Would these be strong joints?
Examples?
Sutures (skull bones)
Gomphoses (teeth)
Synchondroses (epiphyseal cartilages)
Synostosis (epiphyseal lines of mature long bones)
5. Amphiarthroses (slightly movable) Would these be strong?
Joint is formed with collagen fibers or cartilage
Examples?
Syndesmosis (ligaments)
Symphysis (separated by fibrocartilage; pubic symphysis, vertebral discs)
6. Diarthroses (freely movable) Are these joints strong?
What is the key function?
Synovial joints are diarthrotic joints
Examples?
Knee
Shoulder
Hip
7. Parts of articulations
8. Synovial joints Plane; slight movement; multiaxial (usually 1 main)
Saddle; movement; multiaxial (usually 1 main)
Hinge; uniaxial
9. Synovial joints Pivot; rotation; uniaxial
Ball & Socket; multiple axes
Elipsoid; multiaxial
10. Synovial joints have lots of structures Bursa: Connective tissue pads
Meniscus: Fibrocartilage pads
Synovial fluid: proteoglycan-rich fluid for:
Lubrication
Shock absorption
Nutrient delivery
11. Compare shoulder & hip