CHAPTER 9

Question 1

Purpose of joint

Answer 1

attachment point for muscles

Question 2

Four joint categories

Answer 2

-bony joint
-fibrous joint
-cartilaginous joint
-synovial joint-most common

Question 3

Bony joint

Answer 3

-immobile
-forms when bones ossifies (when older)

Question 4

fibrous joints and three types

Answer 4

-bound by collagen fibers emerging from one bone into another
-types: sutures (sagittal), gomphoses (tooth socket), syndesmosis (radioulnar)

Question 5

Serrate, lap and, plane suture example locations

Answer 5

S- sagittal
L-temporal
P- mouth palate

Question 6

Cartilaginous joint

Answer 6

-linked by cartilage
-synchondroses (hyaline-first rib), symphysis (fibrocart-pubic symphysis)

Question 7

whats a synovial joint

Answer 7

-two bones separated by joint cavity (space between)
-high mobility

Question 8

articular cartilage, joint cavity, synovial fluid, joint capsule , articular disc (think knee)

Answer 8

AC: hyaline cartilage on ends of each bone
Joint cavity: space between two bones
SF: lubricant in joint cavity
JC: tissues that hold cavity and retains fluid
AD: pad between bones

Question 9

meniscus

Answer 9

-absorb shock
-stabilizes tp prevent dislocation

Question 10

whats a bursa, how many in knee

Answer 10

synovial filled sac located between muscles
-13

Question 11

synovial joint classifications and examples (song)

Answer 11

Condylar: one bone fitting in other ex fingers
saddle: saddle shapped ex thumb
plane: sliding, carpal bones
ball-socket: head fit in socket, shoulder
pivot: spins/rotates radioulnar
hinge: one bone into another, knee

Question 12

Tibiofemoral

Answer 12

most complex freely moved joint of body
-slight rotation and lateral gliding

Question 13

patellofemoral joint

Answer 13

gliding joint

Question 14

how to stabilize knee

Answer 14

-quad tendon in front
-tendon of semimembranosus
-lat and medial meniscus (absorb shock and prevent side to side rocking)

Question 15

how to lock and unlock knee

Answer 15

ACL locks
popliteal contracts to unlock

Question 16

Joint disorders

Answer 16

sprain- stretch or tear of ligament
strain- stretched or partially torn muscle
dislocation: displacement of bone from joint
subluxation: incomplete dislocation
bursitis: inflammation on bursa (bunion)
adhesions: fibrous bands between bone surfaces
spurs: excess bone tissue along joint edges
Gout(arthritis): build up of uric acid (high diet- meat, fish)

Question 17

shoulder dislocation

Answer 17

displacement of humerus

Question 18

Joint disease- types

Answer 18

arthritis- pain and inflammation on joints, most common cripple disease

osteoarthritis- most common, wear and tear on joints over the years, cartilage softens, crackling sounds, bone spurs on bones causes pain

rheumatoid- autoimmune attack on joints and degrade cartilage, can be gene caused,

Question 19

ankylosis

Answer 19

bones fusing together

Question 20

what can form if you have osteo and rheumatoid arthritis?

Answer 20

gout artritis