Thoracic Limb 2

Question 1

What are bones connected by with fibrous joints?

Answer 1

Fibrous joints

Question 2

Three joint types?

Answer 2

Fibrous joints
Cartilaginous joints
Synovial joints

Question 3

What type(s) of joint are fibrous?

Answer 3

Synarthrosis- immovable joint

Question 4

What are bones connected by with cartilaginous joints?

Answer 4

Cartilage

Question 5

What are synovial joints surrounded by?

Answer 5

Articular capsule

Question 5

What type(s) of joints are cartilaginous?

Answer 5

Amphiarthrosis- slightly moveable
Synarthrosis - immoveable

Question 6

What are synovial joints?

Answer 6

Space btwn bones

Question 7

What type of joint is synovial?

Answer 7

Diarthrosis (freely moveable joint)

Question 8

What hold bones together in synovial joint?

Answer 8

Ligaments and muscles

Question 9

Components of synovial joint?

Answer 9

Articular cartilage, synovial fluid, joint cavity

Question 10

What does hyaline mean?

Answer 10

Semitranslucent

Question 11

Function of articular cartilage? Vascularity?

Answer 11

Covers bone; avascular

Question 11

What is the function of the articular capsule?

Answer 11

Encloses synovial cavity

Question 11

What are the two layers of the articular capsule?

Answer 11

Outer fibrous capsule and inner synovial membrane

Question 12

What does the inner synovial membrane produce, composition , and what does it cover?

Answer 12

Synovial fluid; blood vessels, lymphatics, nerves; Covers all structures within capsule except articular cartilage

Question 13

Functions of synovial fluid?

Answer 13

lubricates joint
aids in shock absorption
supplies nutrients/oxygen
removes waste to/from cartilage

Question 14

Why is it important that synovial fluid supplies nutrients and oxygen to cartilage?

Answer 14

Cartilage is avascular

Question 15

What are the assisting structures of the synovial joint?

Answer 15

Ligaments
Muscles/tendons
menisci

Question 16

How are joints classified? Examples?

Answer 16

Type or direction of movement; back and socket, hinge

Question 17

What is the shoulder joint also called? Connections?

Answer 17

Glenohumeral joint; humeral head articulates with glenid cavity of scapula

Question 18

What type of joint is the shoulder joint? (Type and common names) Movement classification?

Answer 18

Synovial, ball and socket
Diarthrosis - freely moveable

Question 19

Primary movement of shoulder joint?

Answer 19

Flexion and extension

Question 20

What are the stabilizers of the shoulder joint?

Answer 20

Medial and lateral glenohumeral ligaments
Muscle tendons crossing joints

Question 21

Is the shoulder joint stable? Why or why not?

Answer 21

No because of its high mobility
-poor bony congruence
- loose articular capsule
- glenoid labrum deepens which glenoid cavity

Question 22

Why is the elbow joint complex?

Answer 22

It has THREE attachments from humerus, radius and ulna

Question 23

What is the primary weight bearing elbow joint?

Answer 23

Humeroradial joint

Question 24

What elbow joint restricts sagittal deviations?

Answer 24

Humeroulnar joint

Question 25

How many capsules does the elbow joint have?

Answer 25

ONE

Question 26

What limits the rotation of the ulna?

Answer 26

Proximal radioulnar joint

Question 27

What does the anconeal process limit? (movement)

Answer 27

mediolateral movement

Question 28

What do the medial and lateral collateral ligaments do?

Answer 28

Stabilize respective sides of the joint
-Restrict excessive elbow rotation

Question 29

Lateral collateral ligament of the elbow associated with?

Answer 29

Oversupination

Question 30

Medial collateral ligament of the elbow associated with?

Answer 30

Overpronation