Chapter 9 joints Flashcards
where 2 bones meet
articulation
study of joints
arthrology
study of musculoskeletal movement
kinesiology
no movement (immovable)
synarthrosis
slight movement
amphiarthrosis
freely moveable
diarthrosis
Not really a joint (but used to be), results from joint ossification, no movement.
Bony joint (synostosis)
adjacent bones bound by collagen fibers that emerge from one bone, cross space between them, and penetrate into the other.
fibrous joints
fibrous joint between cranial bones, no movement (synarthrosis)
suture
wavy lines interlock bones. coronal, sagittal, lambdoid sutures
serrate suture
bones overlap with beveled edge. Squamous suture
lap (squamous suture)
straight bones meet, no overlap. intermaxillary suture
plane (butt) suture
connects tooth, to alveolus of jaw, held by fibrous periodontal ligament. Little to no movement (synarthrosis)
gomphosis
longer collagenous fibers between adjacent bones, interosseous membrane. Limited movement.
syndesmosis
two bones linked by cartilage
cartilaginous joints
hyaline cartilage between bones. epiphyseal plate, R1 to sternum. Immovable.
synchondrosis
fibrocartilage. interpubic discs, intervertebral discs. shock absorbing fibrocartilage disc between vertebrae. Slightly movement.
symphysis
freely movable, structurally complex joints. Enclosed by joint capsule.
synovial joints
connective tissue that encloses the joint (articular) cavity
joint (articular) capsule
joint cavity is filled with
synovial fluid
pad crosses entire joint
articular disc
pad doesn’t cross entire joint
meniscus
tough connective tissue, joins bone to bone
ligament
sheet or strip of tough connective tissue, attaches muscle to bone
tendon
fibrous sacs of synovial fluid. Between muscles, tendon and bone, skin and bone
bursa
bursa wrapped around tendon
tendon sheath
stabilizes joints, stronger bones (wolf’s law), stronger muscles
weight bearing exercises
increases the flow of synovial fluid in cartilage
exercise
fluid exits cartilage and removes waste
compression
fluid enters cartilage, taking in nutrients
decompression