Chapter 9: Articulations

Question 1

A joint, or an articulation, is a point of contact between….

Answer 1

• bone and bone
• bone and teeth
• bone and cartilage

Question 2

What are the three FUNCTIONAL catagories and their respective movement levels?

Answer 2

Synarthrosis: No movement

Amphiarthrosis: Little Movement

Diarthrosis: Free Movement

Question 3

What are three major structural categories?

Answer 3

1. Fibrous
2. Carilaginous
3. Synovial

Question 4

What are two examples of Fibrous, Synarthosis articulations? Two examples of where these are found?

Answer 4

1. Suture (Skull sutures…)
2. Gomphosis (Teeth and their articulatons with either the mandible or maxilla)

Question 5

What is a cartilagionous, synarthrosis? What is an example?

Answer 5

Synchondrosis

Question 6

What is a fibrous, amphiarthrosis? An example?

Answer 6

Syndesmosis (radius and ulna)

Question 7

What is a cartilagionous joint?

Answer 7

• A joint in which the articulating bones are attached together by some type of cartilage.

Question 8

What are the two main cartlaginous articulations?

Answer 8

Synchondrosis

Symphysis

Question 9

What cartilage type is present in Symphysis?

Answer 9

Symphysis are characterized by a pad of fibrocartilage between articulating bones.

Question 10

What type of cartilage is characterisitc of synchondrosis?

Answer 10

Hylaine cartilage is characteristic of synchondrosis.

Question 11

What is the structural category of diarthrosis?

Answer 11

Synovial

Question 12

Three types of motion at a joint?

Answer 12

Linear (sliding or gliding)

Angular (angles of bones change in relation to each other)

Rotation (one bone can rotate against or within another)

Question 13

What are examples of joints that consist of linear motion?

Answer 13

• Intertarsal joints
• Intercarpal joints
• Acromioclavicular joint

Question 14

What are examples of angular motions?

Answer 14

• Flexion and Extension
• Abduction and Adduction
• Lateral Flexion
• Circumduction

Question 15

Between the bodies of vertebrae are what type of articulations?

Answer 15

Symphysis (cartilaginous joints (fibrocartilage))

Question 16

What is the articulation type (structural) between the articular processess of the spine?

Answer 16

Synovial

Question 17

1. Identify the structure (1)
2. Identify the structure (2)

Answer 17

1. Anulus fibrosus (outside of doughnut)
2. Nucleus Pulposus (filling of doughnut)

I don’t like the doughnut analogy personally. It captures the idea but it does a severe disservice to the integrity of the vertebrae. They are incredibly strong, especially when trained.