Joints Flashcards
sytharoses
immovable joint
diathroses
freely movable joint
amphiarthroses
slightly movable
types of fibrous joints?
sutures, sydesmoses, gomphoses
gomphoses
-peg in socket
-only seen in teeth, alveolar sockets
syndesmoses
-bonds of fibrous tissue
-short = less mvmt
-long = more mvmt
sutures
-rigid interlocking skull joints
-slowly ossify over time
cartilaginous joints features
united by cartilage, no cavity, kind of moveable
synchondroses are what kind of cartilage?
hyaline
synchondroses
bar/plate of hyaline cartilage b/w bones
symphyses are what kind of cartilage?
fibrocartilage
symphyses
strong, slightly movable fibrocartilage
synovial joint features
- fluid-filled cavities
- fully moveable
what are the 6 general features of synovial joints?
- articular cartilage
- joint cavity
- articular capsule
- synovial fluid
- reinforcing ligaments
- nerves & blood vessels
bursae
-bags of synovial fluid, lubricating “ball bearing”
-not strictly part of synovial joints
tendon sheath
-stretched out bursae
-completely surrounds tendons
what is the most important influencer in stability?
muscle tone
when a bone is attached to an immobile bone it is called an
origin
when a bone is attached to another movable bone
insertion
example of a gliding movement
intercarpal joints b/w vertebrae
flexion
decrease angle
extension
increase angle
adduction
move towards midline
abduction
move away from midline
