Joints

Question 1

What are joints

Answer 1

Articulations, where two or more bones meet

Question 2

Function of joints

Answer 2

Holds bones together
Allows for mobility

Question 3

Two ways joints are classified

Answer 3

Functionally
Structurally

Question 4

Functional joint classifications

Answer 4

Synarthroses-immovable joints
Amphiarthroses- slightly moveable joints
Diarthroses- freely moveable joints

Question 5

Structural joint classifications

Answer 5

Fibrous joints- generally immovable
Cartilaginous joints- immovable or slightly movable
Synovial joints- movable

Question 6

Fibrous joints

Answer 6

United by fibrous tissues
Types include:
Sutures
Syndrsmoses
Gomphoses

Question 7

Cartilaginous joints

Answer 7

Bones are connected by fibrocartilage
Types include:
Synchondrosis
Symphysis

Question 8

Synovial joints

Answer 8

Articulating bones that are separated by a joint cavity
Synovial fluid is in the joint cavity

Question 9

Four features that distinguish synovial joints

Answer 9

Articular cartilage
Articular capsule
Joint cavity
Reinforcing ligaments

Question 10

Shoes of synovial joints based on shape

Answer 10

Plane joint
Hinge joint
Pivot joint
Condylar joint
Saddle joint
Ball and socket joint

Question 11

Plane joint

Answer 11

Articular surfaces are flat
Only glides side to side

Question 12

Hinge joint

Answer 12

Only move one way
Flexion and extension

Question 13

Pivot joint

Answer 13

E.g ulna and radius
Uniaxial

Question 14

Condylar joint

Answer 14

Biaxial
Oval in shape

Question 15

Saddle joint

Answer 15

E.g in the thumb
Biaxial
Can go forward and back and side to side

Question 16

Ball and socket joint

Answer 16

Multiaxial
Goes in many different directions
Sphere shape so it can move everywhere