A&P Exam 3 Flashcards
where does what are joint
site where two or more bones meet
what do joints provide
mobility and helps hold the skeleton together
another name for joint
articulations
how many ways can you classify joints
two ways
functional classification
based on the amount of movement allowed
- synarthrosis
- ampiarthrosis
- diathrosis
synarthrosis
a functional movement classification of joints
it is NO movement allowed
ampiarthrosis
a functional movement classification of joints
only SLIGHTLY moveable joint
diarthrosis
a functional movement classification of bone
freely moveable
structural classification
organization of joints based on materials it’s made of or it’s missing
- fibrous joints
- cartilaginous joints
- synovial joints
fibrous joints
joints are joined by protein fibers, most are synarthrosis
- no joint cavity
- like collagen
- no cartilage
sutures
seams that occur only between bones of the skull
what are bones joined by in sutures
by short protein fibers
what happens to sutures in adulthood
sutures ossify and become bone
-synostoses
syndesmoses
bones are connected by a ligament
- straplike dense irregular connective tissue
- longer protein fibers
what do ligaments do
connect one bone to another bone
what do tendons do
connect a muscle to a bone
gomphoses
joint where one bone is embedded in another bone and also connected by a ligament
example of gomphoses
only example is teeth at the alveolar margins of the mandible and maxilla
cartilaginous joints
bomes are joined using cartilage (no joint cavity)
most are immovable or slightly movable (synarthrotic or ampiarthrotic)
synchondroses
joints contain a thin plate of hyaline cartilage
symphyses
joint uses a thin layer of hyaline cartilage on bone ends and a pad of fibrocartilage in between
what is the fibrocartilage pad like
strong and acts as a shock absorber
joints allow for minor movement
synovial joints
bones are joined using cartilage and a joint cavity
which joints are synovial joints
almost all limb joints