Joints Flashcards
(87 cards)
What is the weakest parts of the skeleton?
Joints (articulations)
Articulation/Joints
site where two or more bones meet
Functions of a Joint
Give skeleton mobility
Hold the skeleton together
What joints classified by?
Structure
Function
Structural Classification of Joints
focuses on the material binding bones together and whether or not a joint cavity is present
3 structural classifications of joints
Fibrous
Cartilaginous
Synovial
Fibrous Structural Class of Jts
united by collagen fibers
cartilaginous structure joints
united by cartilage
Synovial joints
covered with cartilage; enclosed within capsule
Functional Classification of Joints
is based on amount of movement by the joint
Synarthroses
Amphiarthroses
Diarthroses
Synarthroses
immovable (cartilaginous) function
Amphiarthroses
slightly movable
Diarthroses
freely movable (synovial) function
Bones are joined by?
fibrous tissues
In fibrous structural joints, there is no?
Joint cavity
Most fibrous structural joints are?
immovable
There are three types of fibrous structural its, what are they?
sutures
syndesmoses
gomphoses
Sutures occur between what?
bones of the skull
Sutures are comprised of?
interlocking junctions completely filled with connective tissue fibers
sutures bind
tightly together, but allow for growth during youth
syndesmoses
bones are connected by a fibrous tissue ligament
syndesmoses movement?
varies from immovable to slightly
Example of syndesmoses
connection between the tibia&fibula and ulna&radius
Gomphoses socket type
Peg-in-socket fibrous jt between a tooth and its alveolar socket