21971176
Description
Flashcards by Evian Chai, updated more than 1 year ago
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Created by Evian Chai
about 4 years ago
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| Question | Answer |
| What is a joint? | A union between two bones |
| What are the three fibrous joints? | 1. Sutures eg. skull bones 2. Syndesmosis eg. Ulna/radius 3. Gomphosis eg. PDL |
| Can Syndemosis joints such as the ulna/radius move much? What are they united by? | Little movement permitted Connected by interosseous membrane |
| What are the three types of sutures? | 1. Squamous 2. Serrated 3. Denticulate |
| What is the main difference between fibrous and cartilaginous joints? | Fibrous have fibrous connective tissue, while cartilaginous have hyaline/fibrocartilage between them Cartilaginous are more moveable |
| What are the two types of cartilaginous joints? | 1. Synchrondoses (Primary w/ hyaline) eg. Between long bones 2. Symphysis (Secondary w/ fibrocartilage, partially moveable) eg. between intervertebral discs |
| What are 6 features of synovial joints? | 1. Articular cartilage (hyaline) on top of bones 2. Joint cavity w synovial fluid 3. Joint capsule 4. Synovial membrane 5. Discs (some) dividing joint into more cavities 6. Bursae (some) sacs w synovial fluid |
| How many layers does the joint capsule have? | Two Outer fibrous layer and thin inner synovial membrane layer |
| What is the function of the synovial membrane? | Rich capillary network Capable of secreting/absorbing synovial fluid for lubrication |
| What are 3 other ways to classify joints? | 1) Joint Shapes - Ball and socket (Hip) - Condyloid (wrist) - Hinge (Elbow) - Plane/gliding (Wrist) - Pivot - Ellipsoid (Thumb) - Saddled-shape (Thumb) 2) Movements - Extension vs Flexion - Abduction vs Adduction - Rotation (External vs Internal) - Supination vs Pronation - Inversion vs Eversion 3) Axis of Rotation - Uniaxial - Bixaxial - Multiaxial |
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