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What is 1 + 3?
wut are the 3 types of mvmt?
1 flat bone slips ovr another
changes the angles of the levers
rotates on axis.ie=atlas nd axis
wut are types of angular mvmts?
dec in angle;2 bones become closer
inc the angle
moving away from midline
draw a circle
wut are the special mvmts?
sole of ft turns medially(kick w/ inside of ft in soccer)
sole of ft turns laterally (2nd pos in ballet)
ok sign w/ thumbs
plane,hinge,pivot,condyloid,saddle joint,ball nd socket
wut are the types of joints?
flat surfaces.ie-intercarpals,gliding mvmt
flexion nd extension (uniaxial).ie-phalanges nd elbow
all mvmts,2 oval ends (convex nd concave)
similar to condyloid (thumb)
ball nd socket
all mvmt (multiaxial).ie-shoulder nd hips
sites where 2 + bones meet
wut functional joint class contains least mobile joints
fibres of lig-like interosseous membrane connecting radius nd ulna
peg in socket fibrous joint
articulating bones by cartilage,lcks joint cavs
common type of cart joints.plate of hyaline cartilage unites bone.ie=epiphyseal plate
artic surfaces of bones are covered w/ articular cart,acts as shock abosrbers nd has strength nd flexibility.ie=intervertebral joints
artic cart,joint cav,rtic capsule,synovial fluid,reinforcing lig
5 structural characterisitcs of synovial joints
absorbs compression placed on joint nd keep bone ends from being crushes
is potential space containing small amt of synovial fluid
made of dense irreg ct thts cont w/ periosteum of artic bones.external layer
occupies all free spaces w/in joint cap.derived by filtration from blood flowing thru cappilaries in synovial mem
has intrinsic lig,which thickens parts of fibrous cap
flattened fibrous sacs lined w/ synovial mem nd contains thin film of synovial fluid
elongated bursa wrpped around tendon subjected to friction
shape of artic surface,ligs,muscle tone
3 natural factors tht stabilize synovial joints
4 major mvmts tht synovial joints allow