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52 Cards in this Set

  • Front
  • Back
What permits movement
joints
Articulation
joint
how are joints classified?
How moveable they are, and for moveable joints, what range of motion is permitted by articulation
Synarthrosis
totally immobile joints
4 types of synarthrotic joints:
Suture, gomphosis, synchondrosis, and synostosis
suture
dense connective, between bones of skull
gomphosis
between teeth and sockets; ex: peridontal ligament- keeps teeth in.
synchondrosis
rigid cartilaginous connection between 2 bones (ex: ribs to sternum)
Synostosis
When 2 bones fuse completely (ex: metopic suture)
amphiarthrosis
joint somewhat mobile
2 categories of amphiarthrosis:
Syndesmosis and symphysis
syndesmosis
bones connected by a ligament.
Symphysis
articulating bones separated and connected by a pad of cartilage(pubis symphysis)
diarthrosis
freely mobile joints
another name for diarthrosis
synovial joint
synovial fluid
liquid that acts as a shock absorber
synovial membrane
lines all joints except over articular cartilages; loose connective tissue covered by epithelial cells
artiular cartilages
covers ends of bones
menisci
additional cartilage padding
bursa
balloons full of synovial fluid
bursitis
inflammed bursa; caused by repetative movement
accessory ligaments
localized thickenings of the joint capsule
extracapsular ligaments
outside of joint capsule from 1 bone to another
intracapsular ligaments
inside joint capsule (ACL)
joints can move 3 ways:
linearly, angular, rotation
linearly
back and forth in one plane at poin of articulation; in joint = gliding; generally between flat bones; planar joints
angular motion
angle between 2 bones changes
types of angular motion
abduction, adduction, flexion, extension, hyperextension
abduction
move limb away from the midline
adduction
move limb toward the midline
flexion
decrease angle beween bones
extension
increase angle of the joints
hyperextension
extend beyond the anatomical position
hinge joints
joints that allow angular motion
ellipoidal joint
permits movement in more than one angle
rotation
rotation of a joint without changing the point of articulation like gliding or angle like motion
supination
turn palm out
pronation
turn palms in
medial/lateral rotation
toward/away from the midline
pivot joints
permits rotation in 1 plane (head Left and Right)
Ball and Socket joints
permit movement in all ranges of motion
circumduction
when you roate, flex, and extend in a series
inversion
turn sole in
eversion
turn sole out
dorsiflexion
raise ball of foot; walk on heels
plantar flexion
raise heel of foot; walk on tip toes
opposition
thumbs; allowed by a saddle joint
protraction
moving joint forward in horizontal plane
retraction
move joint back
elevation
lift something up
depression
move back down
Functions of synovial fluid
lubricates the joint, provides a medium to circulate the nutrients, shock absorbers, and heat absorption