chap 8 joints And body movements Flashcards Preview

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Flashcards in chap 8 joints And body movements Deck (34):
1

definition of joints/ articulations

sites where two or more bones meet

2

2 functions of joints

hold bones together
allow for mobility, strength

3

joints structures

fibrous
cartilaginous
synovial

4

fibrous function, joint cavity, and examples

mostly immovable
no joint cavity
skull-sutures
ligament only connections- tibia-fibula

5

cartilaginous functions, joint cavity, examples

both immovable and slightly movable
no joint cavity
temp. epiphyseal plates
intervertebral discs
pubic symphysis

6

what is synovial composed of?

articular cartilage
joint cavity
articular capsule
synovial fluid
reinforcing ligaments
nerves and vessels

7

6 synovial joint types

plane
hinge
pivot
ellipsoid/condyloid
saddle
ball and socket

8

plane movement and example

glide
intertarsal and intercarpal

9

hinge movement and example

one axis
elbow, ankle
between phalanges

10

pivot movement and example

one axis
radius
atlas at dens

11

ellipsoid/condyloid movement and example

biaxial
metacarpophalangeal
wrist

12

saddle movement and example

biaxial
1st carpometacarpal joint

13

ball and socket movement and example

multiaxial
hip, shoulder

14

movements for synovial joints

flexion... extension
abducation... adduction
pronation.... supination
rotation... circumduction
inversion... eversion
dorsiflexion... plantar flexion
elevation... depression
opposition

15

specialized structures of joints

meniscus
bursa
tendon sheath

16

meniscus definition

fibrocartillage dividing joint space
shock absorber

17

functions of meniscus

prevents side to side rocking of femur on tibia
absorbs shock transmitted to knee joint

18

bursa

bag of synovial fluid outside of joint cavity

19

functions of bursa

decreases friction between adjacent structures during joint cavity

20

bursa medical condition

bursitis

21

tendon sheath

elongated bursa around a tendon

22

function of tendon sheath

decreases friction around tendon

23

tendon sheaths medical conditions

tendonitis; inflammation of the tendon sheaths

24

joint injuries

sprains
dislocations
cartilage injuries

25

what is a sprain

torn ligament or tendon

26

what is a dislocation

displacement of bone from normal position

27

cartilage injuries

torn menisci
arthroscopy

28

joint medical conditions

arthritis
Lyme disease
joint replacements

29

types of arthritis

osteoarthritis
rheumatoid arthritis
gouty arthritis

30

osteoarthritis

wear and tear arthritis
articular cartilage degenerates

31

what is rheumatoid arthritis

genetic, autoimmune
misguided antibody that attacks synovial membrane

32

what is gouty arthritis

Utica acid
too much damage to the joint, needle like Uric acid crystals
extreme pain

33

what is Lyme disease

infected deer tick bite
rash, flu, joint pain, neurological problems

34

joint replacements

arthroplasty
prostheses