Exam 3- Chapter 8 Flashcards
Site where two are more bones meet
Articulation
Functions of joints
- Give skeleton mobility
2. Hold skeleton together
Weakest parts of the skeleton
joints
immovable joint
synarthroses
slightly moveable joint
amphiarthroses
freely moveable joint, most common type
Diarthroses
Fribrous joints
- Sutures
- Syndesmoses
- gosmophoses
RIgis interlocking joints containing shorts connective tissue fibers, allow for growth
sutures
Bones connected by ligaments
Syndesmoses
peg-in-socket joints of teeth in alveolar sockets
gomphoses
bones united by cartilage, no joint cavity
cartilaginous joints
two types of cartilaginous joints
- Synchondroses
2. Symphyses
A bar or plate of hyaline cartilage unites bone
Synchondroses
Hyaline cartilage covers the articulating surfaces and is fused to an intervening pad of fibrocartilage, acts as a shock absorber to prevent to much movement
Symphyses
All are diarthrotic, include all limb joints
Synovial joints
Lubricates and nourishes articular cartilage
Synovial fluid
reinforcing ligaments
- Capsular
- Extracepsular
- Intracapsular
part of the fibrouscapsule
capsular
outside of the capsule
extracapsular
deep to capsule; covered by synovial membrane
intracapsular
detect pain and monitor joint position and stretch
rich nerve fibers
capillary beds produce filatrae for synovial fluid
blood vessel supple
flattedned, firbous sacs lined with synovial membranes; contain synovial fluid
bursae
elongated bursa that wraps completley around a tendon
tendon sheath
attachment to the immovable bone
orifin
attachment to the movable bone
insetion
slipping movements only; metacarples
nonaxial
movement in one place; elbow,knww, radiolunar
uniaxial
movement in two planes; metacarpalphalangeal
biaxial
movement in or around all three planes; hip, shoulder
multiaxial
one flat bone surface glides or slips over another similar surface
gliding
bending movement that decreases the angle of the joint
flexion
reverse of flection; joint angle is increased
extenstion
bending backward beond the striaht position
hperextension
movement of foot
dorsoflextion and planta flexion
movement away from midline
abduction
movement toward midline
adduction
movement describes a cone in space
circumduction
turning of a bone around its own long axis
rotation
turning handbackward
supnation
turning head forward
pronation
toes up
dorsiflxtion
toes down
plantar flexion
turn sole medialy
inversion
tuen sole laterally
eversion
anterior movement
protraction
posterior movement
retraction
lifting body part superiorly
elevation
moving body part inferiorly
depression
the ligaments are stretched or torn
sprains
due to compression and sear stress
cartlage tears
occur when bones are forced out of alignment
dislocations
an inflamation of bursa, cause by a blow or friction
bursitis
inflamation of tenson sheaths
tendonitis