ANAT NOTES 9 PART 1 Flashcards
(19 cards)
anywhere there are joints…
there can be arthiritis
functional classification of joints
Synarthroses - immovable; common in axial
Amphiarthrosis - slightly movable; common in axial
Diarthroses - freely movable; common in appendicular (all synovial joints)
structural classification of joints
- Fibrous
- Cartilaginous
- Synovial
Fibrocartilage
unites bones; resists tension and compression
some synovial joints contain an…
articular disc
symphyses
slightly movable joints that provide strength with flexibility (intervertebral discs, pubic symphysis)
movements allowed by synovial joints
- gliding
- angular movement
- rotation
gliding
one bone across the surface of another
angular movement
movements change the angle between bones
rotation
movement around a bone’s long axis
angular movements include
- Flexion and extension
- Abduction and adduction
- Circumduction
maximum rotation?
45 degrees
plane joint movement
nonaxial (intertarsal and intercarpal joints)
hinge joints movement
uniaxial - allows movement around one axis only
elbow, ankle, and joints between phalanges
how many muscles is the rotator cuff made of and their associated tendons?
4
- Subscapularis
- Supraspinatus
- Infraspinatus
- Teres minor
what are common shoulder injuries?
rotator cuff injuries
what is the wrist joint composed of? how is it stabilized?
radiocarpal and intercarpal joint. stabilized by numerous ligaments
radiocarpal joint
between radius and proximal carpals (the scaphoid and lunate)
allows for angular movement
intercarpal joint
between the proximal and distal rows or carpals; allows for gliding movement
