Shoulder Girdle-chapter 9

Question 1

Shoulder Girdle

Answer 1

• scapula and clavicle, sternum

- acrominioclavicular and sternoclavicular joints

Question 2

Shoulder joint

Answer 2

• scapula and humerus

- glenohumeral joint

Question 3

Bones associated with the Shoulder

Answer 3

1. scapula
2. clavicle
3. sternum
4. humerus
5. rib cage

Question 4

Joints associated with the shoulder

Answer 4

1. glenohumeral
2. sternoclavicular
3. acrominoclavicular
4. scapulothoracic articulation: not a true joint, provides motion and flexibility

Question 5

Ligaments associated with the shoulder

Answer 5

1. sternoclavicular
2. acromioclavicular
3. coracoacromial

Question 6

glenohumeral (shoulder) joint

Answer 6

• most mobile in the body

- few ligaments in this joint because it is very mobile

Question 7

glenohumeral (shoulder) joint movements

Answer 7

1. flexion/extension
2. abduction/adduction
3. horizontal abduction/adduction
4. internal/external rotation

Question 8

sternoclavicular joint

Answer 8

• direct attachment of shoulder girdle to the trunk
• only direct attachment to the trunk
• clavicle moves, sternum does not
• synovial joint

Question 9

sternoclavicular joint movements

Answer 9

elevation/depression
protraction/retraction
rotation

Question 10

sternoclavicular joint capsule

Answer 10

surrounds the joint

Question 11

sternoclavicular joint stability

Answer 11

the articular disc and ligaments create a strong joint with little dislocation possible

Question 12

sternoclavicular joint articular disc

Answer 12

shock absorber, attaches in 2 places acting like a hinge on a door

Question 13

costoclavicular ligament (SC joint)

Answer 13

limits the elevation of the clavicle, holds clavicle to the ribs

Question 14

sternoclavicular ligament (SC joint)

Answer 14

provides reinforcement of joint, limits anterior and posterior movement

Question 15

interclavicular ligament (SC joint)

Answer 15

on top of manubrium, limits depression and downward motion

Question 16

Acromioclavicular joint

Answer 16

• synovial joint with 3 planes of movement
• connects acromion process with lateral end of clavicle
• a weak joint (really mobile)

Question 17

acromioclavicular ligament

Answer 17

superior and inferior, prevent dislocation of clavicle

Question 18

coroclavicular ligament

Answer 18

2 divisions, prevents backward movement of scapula and limits rotation

Question 19

coracoacromial ligament

Answer 19

forms protective arch over the humerus, provides support to humeral head when forced upward in the joint