Skeletal System- Joints Flashcards
Oval shaped condyle of one bone, fits into an elliptical cavity of another bone.
Movement is side to side and front and back.
….. The wrist
Ellipsoidal
Work together to produce movement by way of the lever system.
Muscles, bones and joints.
Consist of a ball like surface of one bone fitted into a cup, like depression of another bone the freest movement of all joints.
Ball and socket
Ex. Shoulder
Hip
The articular surface of one bone is saddle-shaped and the articular surface of the other bone is shaped like a rider sitting on a saddle.
Saddle
Ex. Side to side
Back and forth
Carpal and metacarpal of the thumb
Designed to allow one bone to rotate around the surface of another bone.
Pivot
Ex.c1&c4
Radio ulnar joint
Allow only flexion and extension (door hinge).
Hinge
Ex.elbow
Knee
Usually between two flat surfaces and allow the least movement of all ……. Types of synovial joints.
Gliding
Ex. Carpals
Tarsals
Bones held together by cartilage with no joint cavity.
Cartilaginous joints. (Structure)
Articulating bones separated by a joint cavity enclosed in a joint capsule & lubricated by fluid.
Synovial joints. ( structural )
Bones are held together by collagenous fibers extending from bone to bone with no joint cavity.
Fibrous joints. ( structural )
Joint classification based on structure include.
Synovial
Fibrous
Cartilaginous
Joints that are freely movable joints
Ex. Shoulder knee
Diarthrotic ( function)
Joints that are slightly movable.
Ex. Intervertebral disks
Tibiofibular joints
Amphiarthrotic joints. ( function )
Joints that allow extremely limited or no movement at all.
Ex. Cranial sutures
Teeth in socket
Synarthrotic (function)
3 joint classifications based on function.
Synarthrotic
Amphiarthrotic
Diathrotic
