structure of a synovial joint

Question 1

joint capsule

Answer 1

fibroelastic tissue, continuous with the periosteum

synovial membrane: lines inside of the capsule, secretes synovial fluid (cavity creates space between bone)

Question 2

synovial fluid

Answer 2

lubricates
nourishes the chondrocytes
acts as shock absorber
contains WBC

Question 3

articular cartilage

Answer 3

hyaline cartilage
avascular- doesnt have blood supply (why cartilage doesnt heal well)
teflon

Question 4

menisci (knee) fibrocartilage pad

Answer 4

cushions and guides to keep knee in place
halfmoon shaped
TMJ- has articular discs

Question 5

ligaments

Answer 5

dense fibrous C.T. connect bone to bone; can be inside joint capsule as well as outside (knee has inside and outside)

Question 6

bursae

Answer 6

flattened sacs that contain synovial fluid located where tendon passes over a bone or between muscles
ex) tennis elbow- bursitis

Question 7

tendon sheath

Answer 7

similar to bursa but surrounds tendons (carpus and tarsus)

Question 8

tendons

Answer 8

dense fibrous C.T. that connects muscle to bone (periosteum)

Question 9

range of motion determined by…

Answer 9

bone structure (olecranon process and fossa) 
strength of joint capsule, ligaments, and tendons
muscles that span the joint