Scapular Region

Question 1

Deltoid attachments

Answer 1

from… clavicle, acromion process & spine of the scapula
to… deltoid tuberosity of the humerus

Question 2

Deltoid actions

Answer 2

flexion & medial rotation (anterior), abduction (primarily middle), extension & lateral rotation, horizontal extension (posterior) of humerus

Question 3

Deltoid innervations

Answer 3

axillary nerve
(spinal: C5-C6)

Question 4

Supraspinatus attachments

Answer 4

from… medial 2/3 of the supraspinous fossa
to… superior facet of the greater tubercle of the humerus & to shoulder joint capsule

Question 5

Supraspinatus actions

Answer 5

initiates humeral abduction & laterally rotates humerus; stabilizes glenohumeral joint (reinforces superior aspect of joint capsule)

Question 6

Supraspinatus innervations

Answer 6

suprascapular nerve (C4-6)

Question 7

Infraspinatus attachments

Answer 7

from… the medial 2/3 of the infraspinous fossa
to… the middle facet of the greater tubercle of the humerus & to shoulder joint capsule

Question 8

Infraspinatus actions

Answer 8

lateral rotation of humerus; stabilizes glenohumeral joint

Question 9

Infraspinatus innervations

Answer 9

PNS: suprascapular nerve
CNS: C5-6

Question 10

Teres minor attachments

Answer 10

from… the upper 2/3 of the dorsal surface of the lateral border of the scapula
to… the inferior facet of the greater tubercle of the humerus & to shoulder joint capsule

Question 11

Teres minor actions

Answer 11

lateral rotation of humerus; stabilizes glenohumeral joint

Question 12

Teres minor innervations

Answer 12

axillary nerve (sensory C5-C6)

Question 13

Teres major attachments

Answer 13

from… the dorsal surface of the inferior angle scapula & lower 1/3 of the lateral border of the scapula
to… the medial lip of the intertubercular sulcus of the humerus

Question 14

Teres major actions

Answer 14

humeral adduction, medial rotation, & extension

Question 15

Teres major innervations

Answer 15

lower subscapular nerve (C5-6)

Question 16

Subscapularis attachments

Answer 16

from… the subscapular fossa
to… the lesser tubercle of the of the humerus

Question 17

Subscapularis actions

Answer 17

medial rotation of humerus; stabilizes glenohumeral joint

Question 18

Subscapularis innervations

Answer 18

Upper and lower subscapular nerve (C5-6)

Question 19

Borders of the quadrangular space

Answer 19

Superior border: teres minor
Lateral border: proximal shaft of the humerus
Inferior border: teres major
Medial border: long head of the triceps brachii

Question 20

Neurovascular tracts in the quadrangular space

Answer 20

nervous system tracts: axillary nerve
vasculature: posterior circumflex humoral artery

Question 21

Nerovascular tracts on the medial border of the scapula

Answer 21

Dorsal scapular n & a

Question 22

Neurovascular tracts in the scapular notch

Answer 22

Suprascapular a over, n under

Question 23

Location of the subacromial space

Answer 23

Subacromial
Subdeltoid
Subtendinous of subscapularis

Question 24

Contents of the subacromial space

Answer 24

Subacromial bursa
Subdeltoid bursa
Subscalularis tendon
Subrendinous bursa of subscapularis

Question 25

What neurovascular structures would be injured based on bone fracture of the medial border of the scapula?

Answer 25

Dorsal scapular nerve and artery

Question 26

Describe shoulder separation and relate anatomical structures to the injury

Answer 26

Tears in the acromioclavicular and coracoclavicular ligaments

Question 27

Describe shoulder dislocation and relate anatomical structures to the injury

Answer 27

If the coracoacromial ligament tears the acromiom is free to move down and damage the joint