posterior shoulder

Question 1

what does the long head of the biceps brachii attach to

Answer 1

supraglenoid tubercle, glenoid labrum

Question 2

what does the long head of the triceps attach to

Answer 2

infraglenoid tubercle

Question 3

what attaches to the lateral lips of the intertubercle sulcus

Answer 3

pectoralis major

Question 4

what attaches to the medial lips of the intertubercle sulcus

Answer 4

teres major

Question 5

what attaches to the floor of the intertubercle sulcus

Answer 5

latissimus dorsi

Question 6

what would a surgical neck fracture damage?

Answer 6

axillary nerve and posterior circumflex humeral artery

Question 7

what would a midshaft humerus fracture damage?

Answer 7

radial nerve and deep brachial artery

Question 8

where does the long head of the biceps brachii pass through?

Answer 8

through the intertubercular groove and under transverse humeral ligament

Question 9

muscles of the rotator cuff

Answer 9

supraspinatus
infraspinatus
teres minor
subscapularis

Question 10

Importance of supraspinatus

Answer 10

helps hold the humerus in place

Question 11

importance of infraspinatus, teres minor, and subscapularis

Answer 11

together work to hold humeral head against glenoid
exert a downward glide on humerus head needed for abduction

Question 12

importance of teres minor and infraspinatus

Answer 12

laterally rotate the arm needed for abduction

Question 13

supraspinatus attachments

Answer 13

subscapular fossa
greater tubercle

Question 14

supraspinatus action

Answer 14

shoulder abduction, stabilize shoulder

Question 15

infraspinatus attachments

Answer 15

infrascapular fossa
greater tubercle

Question 16

infraspinatus actions

Answer 16

shoulder lateral rotation
stabilize shoulder

Question 17

teres minor attachments

Answer 17

lateral scapula border
greater tubercle

Question 18

teres minor actions

Answer 18

shoulder lateral rotation
stabilize shoulder

Question 19

subscapularis attachments

Answer 19

subscapular fossa
lesser tubercle

Question 20

subscapularis actions

Answer 20

medially rotates the arm
stabilize shoulder

Question 21

innervation of supraspinatus and infraspinatus

Answer 21

subscapular nerve

Question 22

where is the subscapular nerve located

Answer 22

c5/ c6

Question 23

vessels of infraspinatus and supraspinatus

Answer 23

suprascapular artery

Question 24

innervation of teres minor

Answer 24

axillary nerve

Question 25

where is the axillary nerve located

Answer 25

c5/ c6

Question 26

vessels of the teres minor

Answer 26

posterior circumflex humeral artery

Question 27

where do the nerves and ligaments run in the rotator cuff

Answer 27

nerve passes under ligament, artery passes over

Question 28

innervation of subscapularis

Answer 28

upper and lower subscapular nerve

Question 29

deltoid attachments

Answer 29

lateral 1/3 of clavicle acromion spine of scapula deltoid tuberosity on humerus

Question 30

deltoid actions

Answer 30

anterior: flex and medially rotates shoulder middle: abducts shoulder posterior: extends and laterally rotates shoulder

Question 31

teres major attachments

Answer 31

inferior scapular angle intertubercular sulcus of humerus

Question 32

teres major actions

Answer 32

shoulder adduction, medial rotation, extension

Question 33

innervation of deltoid

Answer 33

axillary nerve

Question 34

vessels of deltoid

Answer 34

posterior/ anterior circumflex humeral artery deltoid branch of thoracoacromial

Question 35

innervation of teres major

Answer 35

lower subscapular nerve

Question 36

lower subscapular nerve location

Answer 36

c5/ c6

Question 37

vessels of teres major

Answer 37

circumflex scapular artery subscapular artery

Question 38

boundaries of quadrangular space

Answer 38

inferior margin of teres minor superior margin of teres major long head of triceps surgical neck of humerus

Question 39

what passes through the quadrangular space

Answer 39

axillary nerve posterior circumflex humeral artery

Question 40

supraspinatus tendinopathy

Answer 40

tendonitis: inflammation tendonosis: degeneration

Question 41

what is the most commonly injured rotator cuff muscle

Answer 41

supraspinatus

Question 42

factors that contribute to impingement of supraspinatus

Answer 42

reduced subacromial space impaired use of infraspinatus and teres minor spurring of acromion impaired use of trapezius posture abnormalities

Question 43

muscles of shoulder flexion

Answer 43

deltoid pectoralis major coracobrachialis biceps brachii

Question 44

muscles of shoulder extension

Answer 44

deltoid latissimus dorsi teres major triceps

Question 45

muscles of shoulder abduction

Answer 45

deltoid supraspinatus

Question 46

muscles of shoulder adduction

Answer 46

deltoid pectoralis major latissimus dorsi teres major triceps

Question 47

muscles of internal rotation

Answer 47

deltoid pectoralis major latissimus dorsi teres major subscapularis

Question 48

muscles of external rotation

Answer 48

deltoid infraspinatus teres minor