Articulations & Body Movements Flashcards
3 structural classes of joints
fibrous
cartilaginous
synovial
‘immovable’
synarthrosis
‘slightly movable’
amphiarthrosis
‘freely movable’
diarthrosis
fibrous joints: ___arthrosis
synarthrosis
cartilaginous joints: ____arthrosis
amphiarthrosis
synovial joints: ____arthrosis
diarthrosis
3 types of cartilaginous joints
synchondrosis
symphyses
symphysis
2 types of fibrous joints
suture
syndesmosis
3 types of synovial joints
uniaxial synovial joint
biaxial synovial joint
multiaxial synovial joint
definition of a joint cavity
space between the articulating bones which contains synovial fluid
definition of articular cartilage
hyaline cartilage covering surfaces of articulating bones
definition of articular capsule
two layers that enclose the joint cavity
two parts of articular capsule
fibrous layer (dense connective tissue) synovial membrane (loose connective tissue)
definition of synovial fluid
viscous fluid in the joint cavity that acts as a lubricant
definition of reinforcing ligaments
ligaments that reinforce joints; can be capsular, extracapsular, or intracapsular
definition of articular discs
pads composed of fibrocartilage that minimize wear and tear on bone surfaces
definition of bursa
sac filled with synovial fluid that reduces friction where structures rub together
definition of tendon sheath
bursa that wraps around a tendon
a nonaxial synovial joint
plane joint
plane joints offer _____ movement
gliding
two types of uniaxial synovial joints
hinge joint
pivot joint
hinge joints offer _______ and _______ movement
flexion & extension
pivot joints offer _______ movement
rotation