joints Flashcards
what are joints?
joints is teh meeting point between two or more bones and there is either movement or no movement
what are jonits classidfied by?
by the tissue thats between the bones
name the types of jont s
synovial,fibrous and cartilaginous joints
describe the fibrous joints
the articulating bones have fibrous tissue in between them very little movement is possible
examples on fibrous joints
sutures of the skull and the inferior tibiofibular joints
cartilaginous joints are divided into two parts which are?
primary and secondary
describe the primary c joints
bones are united by a bar or a plate of hyaline cartilage
no movement is possible
examples on primary c joints?
hylaine cartilage between the epiphysis and diaphysis of a growing bone and the between the first rib and the manbrium sterni
describe teh secondary c joint s
bones united by a bar or a plate of fibrocartillage
a small amount of movement is possible
examples of secondary c joints
sympahsis of the pubic bone and joints between the vertebral bodies
describe synovial joints
the periosteum of thetwo articuating bones fuse togetehr forimng the fibrous capsule
a thin layer of hyaline cartiage lines each bone also called articular cartilage
the synovial membrane lines the cavity relaesing synovial fluid into the joint cavity between the two bones
together the fibrous cartilage and the synovial membrane make the articular capsule taht protects the joint from the outisde
synovial joints can aslo be classified according to?
the shape of the articular surfaces and the types of moement posiible
name teh joints
ball and socket
condyloid
ellipsoid
plane
hinge
saddle
pivot
plane joint description
two flat-sih bones gliding pr roatting against each other
examples on plane joiints
sternoclavicular joints and acromioclavicuar joints
hinge joint descfiption
it resemble the hinge of a door
flexion and extension movements are possible
examples on hinge joint
elbow, knee, ankle
pivot joint
a central bony pivot taht is surronded by bony ligamentous ring and rotation is the only movement allowed
pivot joint
a central bony pivot taht is surronded by bony ligamentous ring and rotation is the only movement allowed
examples on pivot joint
radioulnar joint
condyloid joints
an oval end shaped bone fitting with an oval shaped hollow on the other bone
the movements flexion, extension, adduction and abduction are possible and a smalla mount of rotation is possible
examples on condyloid joint s
metacarpophalangeal joints
elliposoid joint
an elliptical convex articular surface fits into an elliptical concave articular surface
flexion,extension,adduction and abduction are possible but rotation is impossible and cirumduction
examples on ellipsoid joint s
the wrist joint
saddle joints
two saddle dhaped bones
flexion,extension,adduction,abduction,rotation
examples on saddle joint
carpometacrapal joints of the thumb
ball and socket
a ball shapped head fits into a socket like concavity of another bone.
flexion, extension,lateral and medial rotation,adduction,abduction and circumduction.
the stability of the joints depend on
sixe, shape and the arrangment of the articular surfaces, the ligaments and thetone ofg muscles that surrond the joint
