joints (5)

synarthroses

-immovable joints (syn=together; arthro=joint)

amphiarthroses

slightly movable joints (amphi-on both sides)

diarthroses

freely movable joints(dia Thru apart)

movement of fibrous joints

immovable

movement of synovial joints

freely movable

movement of cartilaginous joints

both rigid and slightly movable

types of fibrous joints

suctures, syndesmoses, and gomphoses

suctures

“seam” interconnecting fibers found only in skull

syndesmosis

joint held together by ligament , Variable movement

gomphoses

found in gums, slightly movable , short connective tissue

synchondroses

hyaline cartilage -epiphyseal plate ( synarthrotic +variable movement)

symphyses

fibrocartilage btweeen 2 bones , variable

synovial joints

has fluid filled pocket, diarthrotic

ex of synovial joint

finger, wrists, and shoulder

characteristics of synovial joints

1. articular capsule

2.synovial cavity

3. Articular cartilage covers ends of bones

4. reinforcing ligaments to stabilize joint

extracapsular

outside ligament

uniaxial synovial joints -pivot joint

movements in one plan or single direction ex:rotation

supination

turning palms anterior

pronation

turning palms posterior

uniaxial synovial joints, hinge joint

movement in one plane or single direction( flexion and extension)

biaxial synovial joints, condylar and saddle joints

movements in 2 planes or directions ( flexion/extension) * abduction/ adduction

multiaxial synovial joints ball and socket joint

movement in many planes or directions ( flexion,extension, abduction,adduction, protraction,retraction,elevation, depression)

protraction/retraction

think of jaw bringing inward/outward

elevation and depression

ex bringing jaw up and down

dorsiflexion and plantar flexion

plantar pointing toes down dorsi toes up

inversion

foot away from midline