Exam 2

Question 1

Why are the 3 major joint types in the body (structure)

Answer 1

Classification of joints
- Fibrous; bones held together by dense regular connective tissue (not much movement)
- Cartilaginous; bones joined by Cartilage (lil movement)
- Synovial; bones separated by fluid filled cavity (free)

Question 2

What are the classificatio of bones by function?

Answer 2

• Synarthrosis; Immobile joint
• Amphiarthrosis; slightly Mobile joint
• Diarthrosis; freely movable joint (hips, wrist, shoulder, knees)

Question 3

What tissue is in fibrous joints?

Answer 3

Bones joined by dense regular connective tissue

Question 4

What are the tree specific types of fibrous joints?

Answer 4

Gomphoses; joints between teeth and maxilla and mandible (synarthrosis)
Sutures: joints between skull bones: synarthrosis
Syndesmosis; also called intraosseous; joints between parallel bones in the forearm and leg (radius, ulna) amphiarthrosis

Question 5

Cartilaginous joint. What two types are there? An example.

Answer 5

Bones attached by cartilage
Two types;
Synchondrosis: bones joined by hyaline cartilage; synarthrosis
Exp; ribs to sternum by cartilage

Question 6

Synovial joint.

Answer 6

Freely moveeable (diarthrosis
Articulating bones esperares by joint cavity (elbow, wrist, knee)

Question 7

What is the General anatomy of synovial joint:
(4)

Answer 7

Articular Capsule
Articular Cartilage
Joint cavity
Ligaments

Question 8

In the synovial joint, the articular capsule has 2 layers. What are they and what is their function?

Answer 8

Outer fibrous layer made of dense regular connective tissue; this strengthens joint
Inner synovial joint; this secretes synovial fluid

Question 9

In the synovial joint, what is the articular cartilage?

Answer 9

• Articular surfaces in synovial joints covered by hyaline cartilage
• reduces friction and acts as shock absorber

Question 10

I’m the synovial joint, what does the joint cavity do?

Answer 10

• space between articulating bones
• reduces friction and acts as shock absorber

Question 11

I’m the synovial joint, what does the joint cavity do?

Answer 11

• space between articulating bones
• contains small amount of synovial fluid which :
  ————— lubricates and nourishes articular cartilage
  ————— nourishes chondrocytes of articular cartilage
  ————— absorbs shock during compression of the joint

Question 12

In the synovial joint, what does the ligaments do?

Answer 12

Connects bone to bone; dense regular connective tissue
Sensory nerves: detect pain and amount of stretch in a joint
Blood vessel; nourish tissues in the joints