(Anatomy) Unit 2: Concept 2
structural classification
Based on what binds the bones together in the joint and if a cavity is present
functional classification
Based on what they do and how much movement they allow
pivot
Joint that allows pronation
pronation
Movement that allows you to turn your arm backward, flip your palms over
adduction
Movement toward the midline of the body
circumduction
Type of movement that allows you to move your arm in a complete circle
gliding joint
also called plane joint;allows one bone to slide over another
Isotonic
causes a change in the length of the muscles
Synovial joints
connect bones with dense connective tissue and a fluid filled cavity
Fibrous joints
connect bones with the collagen fibers of dense connective tissue
arm curl
flexion and extension
Diarthrosis
freely moving joints
condylar
joint part of your wrist; looks like a pedestal with a joint on top
ball and socket joint
joint that allows the most movement and maneuverability of all synovial joints.
contract
movement occurs when muscles do this
elevation
movement to lift shoulders to shrug
abduction
moving away from the median plane; along the frontal plane
isometric
no change in muscle length
synarthroses
non-moving joints
origin
that bone that moves the least or not at all
insertion
the movable bone during a muscle contraction
Saddle joint
type of joint that allows thumb to grab things in a way other fingers cannot