Joints

Question 1

Articulation

Answer 1

where two or more bones meet

Question 2

What is the function of joints?

Answer 2

They hold the skeleton together and give the skeleton mobility.

Question 3

2 classifications of joints

Answer 3

functional and structural

Question 4

What is the functional classification based on?

Answer 4

amount of movement joint allows

Question 5

What is the structural classification based on?

Answer 5

The material binding the bones together and the presence/absence of joint cavity.

Question 6

3 functional classifications of joints and their meaning

Answer 6

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

Question 7

3 structural classifications of joints and their meanings

Answer 7

Fibrous joints -
Cartilaginous joints -
Synovial joints -

Question 8

The two types of questions to ask yourself when looking at joints:

Answer 8

What is this functionally classified as? What is this structurally classified as?

Question 9

Fibrous Joints:

Answer 9

joined together by dense fibrous connective tissues
- no joint cavity
- Synarthrotic (immovable)
- 3 types: Sutures, Syndesmoses, Gomphoses

Question 10

3 types of fibrous joints

Answer 10

Sutures, Syndesmoses, Gomphoses

Question 11

What are Sutures?

Answer 11

A type of fibrous joint.
- Interlocking joints
- immovable (synarthroses)
- found in skull

Question 12

What are Syndesmoses?

Answer 12

A type of fibrous joint.
- joint where bones are connected by ligaments
- fiber length varies so movement varies
- interosseous membrane holding the radius and ulna

Question 13

What are Gomophoses?

Answer 13

A type of fibrous joint.
- peg-in-sock joint
- periodontal ligament
- connects the tooth to the alveolar bone socket

Question 14

Cartilaginous joints and the types

Answer 14

Bones connected by cartilage
- No joint cavity
- 2 types: Synchondrosis and Symphysis

Question 15

How are cartilaginous joints functionally classified as?

Answer 15

Synarthroses or Amphiarthroses b/c they have little to no movement.

Question 16

Synchondrosis joint

Answer 16

Type of cartilaginous joint.
- Bones joined together by Hyline cartilage.
- Synarthroses
- Example: Epiphyseal plate

Question 17

Symphysis joint

Answer 17

Type of cartilaginous joint
- bones joined together by fibrocartilage.
- Amphiarthroses
- Example: Pubic symphysis

Question 18

Synovial Joints

Answer 18

Bones separated by fluid filled cavity
- Diartroses
- Most common type of join in our body