Joints (Articulations) Flashcards
Synarthrosis
Immobile; bones very close together; immovable/interlock together
ex. sutures, alveolar processes, and epiphyseal plates
Amphiarthrosis
slightly movable; bones apart
- may have a pad of cartilage between bones
- bones held in place via ligaments
- ex. between tibia and fibula
Diarthrosis
freely moveable; often covered by articular cartilage
-have joint cavity and joint capsule
-osis
condition
gomphosis
bolt
Amphi
around
syn
together
Fibrous Joints can be…
TYPES-
Sutures
Syndesmosis
gomphosis
Cartilaginous Joints can be
TYPES-
Symphysis
synchondrosis
Synovial Joint can be..
Various types
Suture
no movement, thin layer of fibrous CT binds bone together, interlock in skull
Syndesmosis
bones bound together by interosseous ligaments
ex. pivot point for radius and ulna
functionally amphiarthrosis
Gomphosis
process in boney socket (alveolar process)
Functionally a synarthrosis
Symphysis
bones ends covered with articular cartilage and fibrocartilage pad between bones, cushions, small movement.
synchondrosis
binding of bones via hyaline cartilage (capable of repair)
ex. costochondrial cartilage
Functionally- synarthrosis
Synovial Joint
Allows for wide movement (STRONG but NOT ALWAYS STABLE) ; many subtypes
- Functionally diarthroses
- bones separated by space (JOINT CAVITY)
- articular cartilage
- articular joint capsule -CT, surrounds bone ends
- synovial membranes- lines joint capsule and secretes synovial fluid; lubricates, nourishes, and cushions
- joint cavaties are fluid filled
- Ligaments surround joint capsule
Synovial Joints may have…
menisci - fibrocartilage pads
bursae
fluid filled bags, cushions; where tendon passes over bone or between muscles
Inflammation state= bursitis
Tendon sheath= modified bursa- covers tendon
Flexor retinaculum
forms carpal tunnel
