Shared Flashcard Set

Details

Joints
Joints and supporting structures (Tulane SOM 2015)
26
Medical
Professional
08/05/2011

Additional Medical Flashcards

 


 

Cards

Term
fibrous joint
Definition
two bone surfaces joined by fibrous tissue; very little movement
Term
primary cartilaginous joint
Definition
bones are united by a plate or bar of hyaline cartilage; no movement
Term
secondary cartilaginous joint
Definition
bones united by plate of fibrocartilage and articular surfaces are covered w/ thin layer of hyaline cartilage; small amount of movement possible
Term
synovial joints
Definition
joints w/ hyaline cartilage on articular surfaces, joint cavity lined by synovial membrane/ containing synovial fuid; produces variety of movements depending on articular surfaces
Term
synovial membrane
Definition
lining of the synovial joint cavity
Term
capsule
Definition
tough fibrous membrane protecting synovial membrane
Term
synovial fluid
Definition
viscous fluid produced by synovial membrane which lubricates articular surfaces of synovial joints
Term
articular disc
Definition
disc or wedge of fibrocartilage imposed between articular surfaces of bones in a synovial joint
Term
fatty pad
Definition
found is some synovial joints between synovial membrane and capsule or bone
Term
ligament
Definition
fibrous cord or band that unites two bones or other structures
Term
cruciate ligaments
Definition
important ligaments w/i knee that lie w/i capsule
Term
plane joint
Definition
apposed articular surfaces are flat and slide on one another
Term
hinge joint
Definition
like door hinge; allows extension and flexion
Term
pivot joint
Definition
joint w/ central bony pivot surrounded by bony-ligamentous ring; only rotation
Term
condyloid joint
Definition
two distinct convex surfaces that articulate w/ two concave surfaces; produces range of movements
Term
ellipsoid joint
Definition
elliptical convex surface fits into matching convcave surface; no rotation
Term
saddle joint
Definition
reciprocally concavoconvex surfaces producing range of movements
Term
ball-and-socket joint
Definition
ball shaped head fits into concavity; produces range of movements
Term
fibrous ligaments
Definition
prevent excessive mvmt; will not stretch back to orig. length
Term
elastic ligaments
Definition
support return of bone position after mvmt.; stretch back to original length
Term
3 main factors controlling joint stability
Definition
1. articular surfaces (shape)
2. ligaments
3. muscle tone
Term
Hilton's Law
Definition
sensory nerve supplying a joint also supplies the muscles moving the joint and the skin overlying the insertions of these muscles
Term
bursae
Definition
lubricating device- fibrous sac w/ smooth membrane and film of viscous fluid; found where tendons rub bones, ligaments, tendons, under skin rubbing bony structures
Term
synovial sheath
Definition
tubular bursa that surrounds a tendon; reduces friction between tendon and surroundings
Term
mesotendon
Definition
suspends a tendon w/i a synovial sheath enabling blood vessels to enter tendon
Term
vincula
Definition
narrow threads that replace mesotendon where range of mvmt. is extensive
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