Scapular & Deltoid Regions

Question 1

Rotator cuff muscles

Answer 1

subscapularis, supraspinatus, infraspinatus, teres major

Question 2

innervation of deltoid

Answer 2

axillary n. (C5, C6)

Question 3

Arterial supply of deltoid?

Answer 3

deltoid branch of thoracoacromial arterial trunk

Question 4

distal attachment of deltoid?

Answer 4

deltoid tuberosity of humerus

Question 5

proximal attachment of deltoid?

Answer 5

lateral 1/3 of clavicle, acromion, and spine of scapula

Question 6

3 parts of deltoid?

Answer 6

clavicular (anterior), middle, and spinal (posterior)

Question 7

innervation of teres major?

Answer 7

lower scapular n. (C5, C6)

Question 8

arterial supply of teres major?

Answer 8

circumflex scapular a.

Question 9

distal attachment of trees major?

Answer 9

medial lip of inter tubercular (bicipital) groove of humerus

Question 10

Proximal attachment of trees major?

Answer 10

posterior surface of inferior angle of scapula

Question 11

innervation of serratus anterior?

Answer 11

long thoracic n. (C5, C6, C7) “raise your arms to heaven”

Question 12

blood supply to serratus anterior?

Answer 12

lateral thoracic a.

Question 13

distal attachment of serratus anterior?

Answer 13

anterior surface of medial border of scapula

Question 14

proximal attachment of serratus anterior?

Answer 14

external surfaces of lateral parts of ribs 1-9

Question 15

which rotator cuff muscle is most commonly injured?

Answer 15

supraspinatus

Question 16

innervation of supraspinatus?

Answer 16

suprascapular n. (C4, C5, C6)

Question 17

blood supply of supraspinatus?

Answer 17

suprascapular a.

Question 18

distal attachment of supraspinatus?

Answer 18

superior facet of greater tubercle of humerus

Question 19

proximal attachment of supraspinatus?

Answer 19

supraspinous fossa of scapula

Question 20

action of supraspinatus?

Answer 20

works with deltoid in abduction of humerus, acts with other rotator cuff muscles in stabilizing shoulder joint

Question 21

impingement syndrome can be due to what 2 things?

Answer 21

tendonitis: suprspinatus tendon
bursitis: involve subacromial

Question 22

innervation of subscapularis

Answer 22

upper and lower sub scapular n. (C5, C6, C7)

Question 23

blood supply to supcapularis?

Answer 23

subscapular a.

Question 24

action of subscapularis?

Answer 24

medially rotates and adducts humerus helps hold humeral head in place

Question 25

distal attachment of subscapularis?

Answer 25

lesser tubercle of humerus

Question 26

proximal attachment of subscapularis?

Answer 26

subscapular fossa (anterior surface of scapula)

Question 27

innervation of infraspinatus?

Answer 27

suprascapular n (C5, C6)

Question 28

blood supply of infraspinatus?

Answer 28

suprascapular a.

Question 29

actions of infraspinatus?

Answer 29

laterally rotates humerus, helps hold humeral head in place

Question 30

distal attachment of infraspinatus

Answer 30

middle facet of greeter tubercle of humerus

Question 31

proximal attachment of infraspinatus?

Answer 31

infraspinous fossa of scapula

Question 32

anastomses of which arteries allow for collateral circulation to the upper limb in the case of a ligated axillary artery?

Answer 32

subclavian and axillary arteries

Question 33

innervation of trees minor?

Answer 33

axillary n. (C5&C6)

Question 34

blood supply of trees minor?

Answer 34

circumflex scapular artery

Question 35

action of teres minor?

Answer 35

laterally rotates humerus, helps hold humeral head in place

Question 36

distal attachment of teres minor?

Answer 36

inferior facet of greater tubercle of humerus

Question 37

proximal attachment of teres minor?

Answer 37

middle part of lateral border of scapula

Question 38

medial part of subclavian a branches into what arteries?

Answer 38

internal thoracic (mammary) a., vertebral a., thyrocervical arterial trunk

Question 39

origin of subclavian a?

Answer 39

right: brachiocephalic trunk; left: aortic arch

Question 40

3 divisions of subclavian a are in relation to what muscle?

Answer 40

anterior scalene muscle

Question 41

thyrocervical arterial trunk breaks into what 4 arteries?

Answer 41

1. transverse cervical
2. inferior thyroid
3. ascending cervical
4. suprascapular

Question 42

the transverse cervical artery has what two branches

Answer 42

superficial or deep (dorsal scapular) branch

*may arise independently or as one trunk (cervicodorsal trunk)

Question 43

posterior division of subclavian a. gives rise to?

Answer 43

costocervical arterial trunk which divides into supreme intercostal a and deep cervical a.

Question 44

at what point of does the subclavian a become the axillary a?

Answer 44

lateral border of first rib

Question 45

cephalic v runs on which side of the arm?

Answer 45

lateral

Question 46

basilic v. runs on which side of the arm?

Answer 46

medial

Question 47

median cubital v. collects from what 2 veins?

Answer 47

median cubital v.

Question 48

what are the borders of the triangular space?

Answer 48

teres minor superior, teres major inferior, tricep laterally

Question 49

quadrangular space borders?

Answer 49

teres major inferiorly, triceps medially, teres minor superiorly, humerus laterally

Question 50

triangle of auscultation borders?

Answer 50

medially trapezius, inferiorly latissimus dorsi, laterally rhomboid major?