chapter 8: joints Flashcards
what are 3 types of joints
fibrous
cartilaginous
synovial
3 functional classifications of joints
synarthroses
amphiarthroses
diarthroses
describe synarthroses
immovable joints
describe amphiarthroses
slightly moveable joints
describe diarthroses
freely moveable joints
freely moveable joints predominate the … skeleton
appendicular
immoveable and slightly moveable joints are largely restricted to … skeleton
axial
fibrous joints are …
immovable
synovial joints are …
freely moveable
3 types of fibrous joints
sutures
syndesmoses
gomphoses
describe fibrous joints
- joined by collagen fibers of connective tissues
- no joint cavity present
- movement depends on length of connective tissue fibers
- mostly immovable, some are moveable
describe sutures
- occur between bones of skull
- filled by minimal amount if very short connective tissue
during middle age, fibrous tissue ossifies and the skull bones fuse as 1. the closed sutures are called …
synostoses (bony junctions)
describe syndesmoses
- bones are connected by ligaments (cords/bands of fibrous tissue)
- movement depends on length of connecting fibers
describe gomphoses
- peg in socket fibrous joint
- tooth on bony alveolar tissue
- peridontal ligament holds tooth in place
describe cartilaginous joints
- articulating bones are united by cartilage
- lack joint cavity
- not highly moveable
2 types of cartilaginous joints
synchondroses
symphysis
describe synchondroses
- bones united by hyaline cartilage
- synarthrotic (immovable)
example of synchondroses
epiphyseal plates in children
- they are temporary joints and eventually become synostoses
describe symphyses
- bones united by fibrocartilage
- allows minimal movement at the joint
- hyaline cartilage present at the articular cartilages
- amphiarthrotic (slightly moveable)
example of symphyses
- intervertebral joints
- pubic symphysis of pelvis
what is a synovial joint
articulating bones that are separated by a fluid- containing joint cavity