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Joints
| Question | Answer |
|---|---|
| fibrous | adjoining bones connected by dense fibrous connective tissue; NO joint cavity, mainly synarthrosis |
| cartilaginous | adjoining bones united by cartilage NO joint cavity amphiarthrosis |
| synovial | adjoining bones covered in articular cartilage; separated by a joint cavity and enclosed in an articular capsule; diarthrosis |
| immovable joints | What does synarthroses mean? |
| slightly movable joints | What does amphiarthroses mean? |
| freely movable joints | What does diarthroses mean? |
| Synovial joints | Articulating bone ends are separated by a joint cavity containing synovial fluid |
| diarthroses or freely moving | All synovial joints are..... |
| synovial | Most joints in the body are ..... |
| joint cavity | A space between the articulating bones that contains a small amount of synovial fluid |
| articular cartilage | hyaline cartilage that covers the surfaces of the bones forming the joint |
| articular capsule | two layers that enclose the joint cavity; 2 layers |
| synovial fluid | viscous fluid, egg whites, located in joint cavity & articular cartilage; lubricant reduce friction |
| reinforcing ligaments | help support joints |
| capsular ligaments | thickenings of the fibrous layer of the articular capsule |
| extracapsular | found outside the articular capsule |
| intracapsular ligaments | found within the articular capsule |
| nerves & blood vessels | sensory fibers detect pain and joint stretching; supply synovial membrane |
| articular discs | pads composed of fibrocartilage minimizes wear and tear on bone surfaces |
| plane | nonaxial; gliding |
| hinge | unixial; flexion & extension |
| pivot | unixial; rotation |
| condylar & saddle | biaxial; flexion, extension, adduction, abduction (2) |
| ball and socket | multiaxial; flexion, extension, adduction, abduction & rotation |
| origin | stationary immovable, less movable bone |
| insertion | more movable bone |