Articulation System Flashcards
Articulation System
allow body movement and hold our bones in our place
Synarthrosis joints
immovable
Amphiarthrosis
semi-movable joints
Dairthrosis
freely movable joints
Fibrosus
joining bones connected by DRCT, no joint cavity
Cartilaginous
Joining bones untied by cartilage
Synovial
Joining bones covered in articular cartilage, separated by joint cavity, lined with synovial membrane
Types of Fibrous Structures
Sutures: immovable; found on the brain
Syndesmosis: semi-movable; between tib-fib
Types of Cartilaginous Structures
Synchondrosis: immovable; between the ribs
Symphysis: semi-movable; invertebral discs
Synovial Structures
All can move freely; Plane, Hinge, Pivot, Condylar, Saddle and Ball and Socket Joint
Flexion
decreasing an angle
extension
increasing an angle
hyperextension
surpassing 180 degrees
circumduction
circular motion
Plane joint
allow glide and rotation like motions
hinge joint
round circular end of bone the articulates with the concave of a bone; unla and humerous
Pivot joint
a circular bone that fits to a concave bone but only allows rotation along the axis
condylar joint
Condylar structure that fits into an oval depression of the other bone
Allows for flexion, extension, abduction and adduction
Saddle joint
The opposing bone surfaces are reciprocally concave and convex
Allows for flexion, extension, abduction and adduction (little rotation is done)
Ball and socket joint
Ball shaped head that fits into a cup like depression
Allows for flexion, extension, abduction, adduction, circumduction and rotation
Tibiofemoral
Knee joint
Glenohumeral
Shoulder joint
Coxal joint
Hip Joint
