Skeletal Systems Articulations

Question 0

Functions of joints?

Answer 0

Give the skeleton mobility while holding skeleton together

Question 1

What’s a joint

Answer 1

Place of contact between bones; bones and cartilage; or bones and teeth

Question 2

Basis of classifying joints as functional

Answer 2

Based on amount of movement allowed by joint

Question 3

Basis of classifying joint into structural

Answer 3

Focuses on the material binding bones together, and if a joint cavity is present

Question 4

3 structural classes of joints?

Answer 4

Fibrous

Cartilaginous

Synovial

Question 5

Structural joints:

Fibrous joints

Answer 5

Bones are joined by dense regular c.t.

Question 6

Structural joints:

Cartilaginous

Answer 6

Bones joined by hyaline cartilage or Fibrocartilage

Question 7

Structural joints:

Synovial

Answer 7

Articulating bones are supported by fluid containing joint cavity

Question 8

Functional joints:

Synarthroses

Answer 8

Immovable

Question 9

Functional joints:

Amphiarthroses

Answer 9

Slightly movable

Question 10

Functional joints:

Diarthroses

Answer 10

Freely moveable

Question 11

Name three types of functional joints

Answer 11

Synarthroses

Amphiarthroses

Diarthroses

Question 12

What is the relationship between mobility and stability in a joint

Answer 12

A joint cannot be both mobile and strong

Question 13

If a ball and socket joint is more mobile than a gliding joint, which of these two joints is more stable

Answer 13

Gliding joint

Question 14

Where are gomposes located?

Answer 14

Articulation of a tooth to the jawbone

Question 15

What is the composition of a suture?

Answer 15

Interlocking junctions completely filled with a minimal amount of very short c.t. Fibers.

Question 16

Where are sutures found

Answer 16

Only between bones of skull

Question 17

What specific bones are syndesmoses found on?

Answer 17

In the ankle where the fibula and tibia connect

Between the radius and the ulna of the forearm

Question 18

What is the composition of a synchondrosis?

Answer 18

Bar or plate of hyaline cartilage

Question 19

Where are synchondrosis found

Answer 19

Costochondral joints and epiphyseal plates of children

Question 20

Characteristics common to all synovial joints

Answer 20

All are freely moveable Diarthroses

Question 21

What are 7 basic components of a synovial joint

Answer 21

Articular capsule
Articular cartilage 
Joint cavity
Synovial fluid
Reinforcing ligaments
Nerves
Blood vessels

Question 22

What is the composition of synovial fluid in a synovial joint

Answer 22

Hyaluronic acid and lubracin

Question 23

What is the function of synovial fluid

Answer 23

Reduce friction between the Arhicular cartilage

Question 24

If a bone moves in just one plane or axis

Answer 24

Uniaxial

Question 25

If a bone moves in two planes or axes

Answer 25

Biaxial

Question 26

If a bone moves in multiple planes or axis

Answer 26

Multiaxial

Question 27

Name the six kinds of synovial joints

Answer 27

``` Plane joints Hinge joints Pivot joints Condylar joints Saddle joints Ball and socket joints ```

Question 28

Synovial joint: Plane joint

Answer 28

Allow only slipping and gliding movement Least mobile

Question 29

Synovial joint: Hinge joints

Answer 29

Cylindrical projection of one bone fits into a trough shape surface on another.

Question 30

Synovial joint: Pivot joint

Answer 30

Rounded end of one bone protrudes into a "sleeve" or ring, composed of bone of another

Question 31

Synovial joint: Condylar joints

Answer 31

Oval Articular surface of one bone fits into a complimentary depression in another

Question 32

Synovial joint: Saddle joints

Answer 32

Similar to condylar joints but allow more movement Convex surfaces resembling saddle

Question 33

Synovial joint: Ball and socket joints

Answer 33

A spherical or hemispherical head of one bone articulates with a cup like socket of another. Most freely moving