click below
click below
Normal Size Small Size show me how
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 |