| Question |
Answer |
| 4 Categories of Joints: |
Synostosis, Synarthrosis, Amphiarthrosis, Diarthrosis |
| Synostosis: |
Bony Joints |
| 2 Bones, Gap between and fused together: |
Synostosis |
| Example of a Synostosis joint: |
Mandable; Frontal bone |
| Fontanel: |
Soft spot in infants cranium |
| Covered in fibrous membrane, allows head to pass through birth canal: |
Fontanel |
| Synarthrosis: |
Fibrous joints bound together by short collagen fibers |
| Little to no movement: |
Synarthrosis joints |
| 3 Types of Synarthrosis: |
Sutures, Gomphoses, Syndesmoses
|
| Sutures: |
Joints between cranial bones |
| Gomphoses: |
Joint between tooth & mandable/Maxilla |
| Syndesmoses: |
Joint between Ulna & Radius; Allows some give but move as one unit |
| Little to no movement: |
Synarthrosis |
| Amphiarthrosis: |
2 bones liked by cartilage |
| Some movement: |
Amphiarthrosis |
| 2 types of Amphiarthrosis: |
Synchondrosis; Symphysis
|
| Synchondrosis: |
Joints joined by hylene cartilage |
| Examples of synchondrosis: |
First rib & sternum; Metaphysis of long bone |
| Symphysis: |
Bound by fibrous cartilage |
| Examples of Symphysis: |
Pubic bone (birth); Joints between vertebrae |
| Diarthrosis: |
Synovial Joints |
| Freely moveable joint: |
Diarthrosis |
| Bursa: |
Fibrous sac filled synovial fluid; Cushions bones & allows tendons to slide over joint |
| Examples of bursa: |
Shoulders/Knees; High impact joints |
| Types of Diarthrosis movement: |
Ball & Socket; Hinge; Pivot; Saddle; Condyloid; Gliding |
| Ball & Socket: |
Shoulder & Hips |
| Hinge joint: |
One direction; Knee/Elbow |
| Pivot: |
Head of radius |
| Saddle Joint: |
Thumb;Trapezoid/Metacarpal |
| Condyloid: |
Metacarpals & philanges (knuckles) |
| Gliding: |
Wrists/Ankles; Flat joints |
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