Shoulder

Question 1

joints of the shoulder

Answer 1

glenohumeral joint, acromioclavicular joint, sternoclavicular joint, scapulothoracic joint

Question 2

glenohumeral joint (GH)

Answer 2

between glenoid cavity and head of humerus

Question 3

acromioclavicular joint (AC)

Answer 3

acromial end of clavicle and acromion of scapula

Question 4

sternoclavicular joint (SC)

Answer 4

sternal end of clavicle and sternal notch of sternum

Question 5

scapulothoracic joint (ST)

Answer 5

between scapula and thorax (“false joint” - actions are the result of AC and SC joints)

Question 6

joints of the shoulder complex are _____ joints

Answer 6

synovial

Question 7

subscapular bursa

Answer 7

between tendon of subscapularis muscle and neck of scapula; articulates with cavity of glenohumeral joint

Question 8

subacromial (subdeltoid) bursa

Answer 8

between deltoid muscle, supraspinatous tendon, and glenohumeral capsule; does not articulate with cavity of shoulder; facilitates movement of deltoid muscle over joint capsule and supraspinatous tendon under coraco-acromial arch

Question 9

pectoral fascia

Answer 9

attaches to clavicle and sternum; goes into pec major; extends laterally as axillary fascia; continues inferiorly with fascia of abdominal wall

Question 10

clavipectoral fascia

Answer 10

goes into subclavius muscle and pec minor; continues superiorly as costocoracoid membrane

Question 11

fascia of the arm

Answer 11

brachial fascia; medial and lateral intermuscular septa

Question 12

brachial fascia

Answer 12

sleeve of deep fascia around arm; continuous with antebrachial fascia of forearm

Question 13

medial and lateral intermuscular septa

Answer 13

extend from deep surface of brachial fascia to humerus; divide arm into anterior and posterior compartment

Question 14

glenohumeral joint capsular ligaments

Answer 14

superior glenohumeral ligament, middle glenohumeral ligament, inferior glenohumeral ligament

Question 15

What motions occur at the scapula?

Answer 15

abduction, adduction, elevation, depression, upward/lateral rotation, downward/medial rotation, protraction/retraction**

** combination of scapular abd/add, upward/downward rotation, and elevation/depression

Question 16

muscles that abduct the scapula

Answer 16

serratus anterior - upper fibers, pec minor

Question 17

muscles that adduct the scapula

Answer 17

middle trapezius, rhomboids

Question 18

muscles that elevate the scapula

Answer 18

upper trapezius, rhomboids, levator scapula, serratus anterior - upper fibers

Question 19

muscles that depress the scapula

Answer 19

lower trapezius, serratus anterior

Question 20

muscles that upwardly rotate the scapula

Answer 20

upper trapezius, lower trapezius, serratus anterior

Question 21

muscles that downwardly rotate the scapula

Answer 21

rhomboids, levator scapula, pec minor

Question 22

muscles that abduct the shoulder

Answer 22

deltoid, supraspinatus, biceps brachii

Question 23

muscles that adduct the shoulder

Answer 23

lattisimus dorsi, teres major, coracobrachialis, pec major, triceps brachii

Question 24

muscles that flex the shoulder

Answer 24

anterior deltoid, pec major, biceps brachii, coracobrachialis

Question 25

muscles that extend the shoulder

Answer 25

posterior deltoid, teres major, latissimus dorsi, triceps brachii

Question 26

muscles that internally or medially rotate the shoulder

Answer 26

anterior deltoid, latissimus dorsi, teres major, subscapularis, pectoralis major

Question 27

muscles that externally or laterally rotate the shoulder

Answer 27

posterior deltoid, supraspinatus, infraspinatus, teres minor

Question 28

muscles that horizontally abduct the shoulder

Answer 28

posterior deltoid

Question 29

muscles that horizontally adduct the shoulder

Answer 29

pectoralis major, anterior deltoid

Question 30

trapezius muscle has 3 parts: _____

Answer 30

upper, middle, lower