UNIT 4.4.JOINTS

Question 1

where is a joint? 3

Answer 1

between 2 bones
•between cartilage and bone
•between teeth and bones

Question 2

Functional classification based on the degree and type of movement: ? 3

Answer 2

1. synarthrosis= immovable = –CRANIUUM BONES

2.amphiarthrosis –
–slightly movable = VERTEBRAE

3. diarthrosis (synovial)
   –freely movable = – PELVIS + FEMUR

Question 3

2) what is Syndesmosis

•Example: anterior tibiofibular joint.

Answer 3

Articulating surfaces are at distance, joined by dense irregular connective

Question 4

where is syndesmosis found?

Answer 4

-between long bones of the body (radio-ulnar, tibio-fibular)

Question 5

what is gomphosis?DENTOALVEOLAR ARTICULATIO

Answer 5

-Articulations between roots of teeth and their sockets.

Question 6

2 types of artilagious joints?

Answer 6

1. synchondrosis =• Connecting material is hyaline cartilage

2. symphiysis =• Connecting material between bones: flat disc of fibrocartilage.

Question 7

what is articular capsule?

Answer 7

surrounds joint (movement/anti-dislocation

Question 8

what is bursae?

Answer 8

-sac structure, elliviate friction

Question 9

articular disc:

Answer 9

Cushion of fibrocartilage =Allows 2 bones of different shape to fit tightly.

Question 10

TENDON SHEATHS

.

Answer 10

–Reduce tension at joints
outer= tendon
inner= bone

Question 11

tendon sheat innervation and vascularisation?

Answer 11

near by nerves in muscle or structures

Question 12

gliding =

Answer 12

between flat surf
Acromioclavicular
–Sternoclavicular

Question 13

Abduction (out) and adduction (in) –

Answer 13

ball + socket joints (shoulder joint.
–hip joint).

condyloid

Question 14

circumduction?

Answer 14

Occurs at ball and socket, saddle (trapezium and metacarpal of the thumb. )

condyloid joints.
Radiocarpal

Question 15

rotation?

Answer 15

At ball & socket and pivot type joints (radio-ulnar joint )

Question 16

TEMPOROMANDIBULAR JOINT moevements

Answer 16

Movements: 
–depression 
–elevation 
–protraction 
–retraction