Scapular & Pectoral Regions

Question 1

Identify.

Answer 1

supraspinatus

Question 2

Identify.

Answer 2

Subtendinous bursa

Question 2

Subscapularis

origin

insertion

action

supply

Answer 2

origin = subscapular fossa

insertion = lesser tubercle of humerus

action = medially rotate humerus

supply = upper & lower subscapular n’s, subscapular a/v

Question 3

Teres Minor

origin

insertion

action

supply

Answer 3

origin = lateral scapula

insertion = greater tubercle humerus

action = laterally rotate humerus

supply = axillary n & suprascapular/subscapular a/v

Question 3

If this tendon wears away, the subacromial bursa can become continuous with the joint capsule & shoulder movement is painful, arm movement is limited.

Answer 3

Supraspinatus tendon

Question 4

this artery is a continuation of subclavian artery

Answer 4

axillary

Question 4

2 heads of pectoralis major?

Answer 4

clavicular & sternocostal

Question 5

Borders of triangular interval?

Answer 5

Superior = Teres major

Medial = Long head triceps brachii

Lateral = Lateral head triceps brachii

Question 5

Dorsal scapular nerve = ventral ramus of…

Answer 5

C5

Question 6

between subscapularis muscle & joint capsule (is there so muscle doesn’t rub against fibrous membrane of the capsule)

Answer 6

subtendonous bursa

Question 6

Identify 1-2.

Answer 6

1. Teres Minor
2. Teres Major

Question 6

dorsal scapular artery is a branch off of…

Answer 6

subclavian a

Question 8

this muscle is “lat’s little helper”

Answer 8

Teres Major

Question 9

Rotator Cuff muscles

Answer 9

“SITS”

Supraspinatus

Infraspinatus

Teres Minor

Subscapularis

Question 9

the subscapular artery comes off of the ____ and splits into __ & ___

Answer 9

axillary artery

thoracodorsal & circumflex scapular

Question 11

Identify 1-8.

Answer 11

1. Coronoid Tubercle
2. Conoid Ligament
3. Trapezoid Ligament
4. Acromioclavicular ligament
5. Acromion
6. Coracoid process
7. Glenoid Cavity
8. Suprascapular notch

Question 12

what 2 vessels provide collateral circulation to scapular region?

Answer 12

thyrocervical trunk & subscapular a

Question 13

Identify 1-2.

Answer 13

1. Teres Minor
2. Teres Major

Question 14

Identify.

Answer 14

infraspinatus

Question 15

this nerve comes off of lateral cord of brachial plexus, runs above pec minor to enter pec major

Answer 15

lateral pectoral n

Question 16

membranous sac containing synovial fluid inferior to acromion & deltoid but superior to supraspinatus.

Answer 16

Subacromial bursa

Question 17

if you ligate anywhere distal to this artery, blood cannot flow to upper limb

Answer 17

subscapular a

Question 17

Pectoralis Major

origin

insertion

action

supply

Answer 17

origin = clavicle, sternum, ribs 2-6

insertion = greater tubercle of humerus

action = aDduct & medially rotate humerus

supply = medial/lateral pectoral n’s & thoracoacromial a/v

Question 18

which ligament divides the suprascapular nerve & artery?

Answer 18

superior transverse scapular ligament

artery goes over

nerve goes under

Question 19

This set of muscles provides inner muscular support for the shoulder.

Answer 19

Rotator Cuff

Question 19

Identify.

Answer 19

subacromial bursa

Question 21

Identify.

Answer 21

Deltoid

Question 23

Identify.

Answer 23

Subscapularis

Question 25

Muscles of the pectoral girdle?

Answer 25

Deltoid Teres Major Teres Minor Supraspinatus Infraspinatus Subscapularis

Question 27

2 muscles that assist the rotator cuff muscles

Answer 27

Deltoid & Teres Major

Question 28

this nerve comes off of medial cord of brachial plexus, pierces pec minor to enter pec major

Answer 28

medial pectoral n

Question 30

Infraspinatus origin insertion action supply

Answer 30

origin = infraspinous fossa insertion = greater tubercle of humerus action = laterally rotate humerus supply = suprascapular n/a/v & subscapular a/v

Question 31

Borders of the Triangular space?

Answer 31

superior = teres minor inferior = teres major lateral = long head triceps brachii

Question 31

the accessory nerve and transverse cervical artery supply...

Answer 31

trapezius

Question 31

this nerve supplies serratus anterior superficially. Damage to it can occur during mastectomy. ("winged scapula")

Answer 31

long thoracic nerve

Question 32

dorsal scapular n/a supply...

Answer 32

levator scapulae & rhomboids

Question 34

Identify 1-2.

Answer 34

1. Suprascapular artery 2. Suprascapular nerve

Question 35

Pectoralis Minor origin insertion action supply

Answer 35

origin = ribs 3-5 insertion = coracoid process of scapula action = protracts scapula supply = medial pectoral n, thoracoacromial a/v

Question 36

Where does clavicle attach to axial skeleton?

Answer 36

Acromioclavicular ligament

Question 37

suprascapular artery is a branch off of...

Answer 37

thyrocervical trunk

Question 38

upper & lower subscapular nerves come off of...

Answer 38

posterior chord

Question 40

Synovial membrane of the glenohumeral joint protrudes through capsule membrane in structures called...

Answer 40

bursae

Question 41

Identify the spaces & their contents.

Answer 41

1. Quadrangular space (axillary n, posterior circumflex humeral a) 2. Triangular interval (radial n, deep brachial a) 3. Triangular space (circumflex scapular a)

Question 42

Teres Major origin insertion action supply

Answer 42

origin = inferior scapula insertion = lesser tubercle of humerus action = medially rotate/extend humerus supply = lower subscapular n & subscapular a/v

Question 44

Borders of the quadrangular space?

Answer 44

Superior = Teres minor Inferior = Teres major Medial = long head triceps brachii Lateral = surgical neck of humerus

Question 45

Identify 1-4.

Answer 45

1. Clavicle 2. Glenoid Cavity 3. Acromion 4. Head of humerus

Question 46

what is purpose of collateral circulation of the scapular region?

Answer 46

ensures adequate blood supply to upper limb in event of ligation

Question 46

what envelops pectoralis minor?

Answer 46

clavipectoral fascia

Question 47

transverse cervical artery is a branch off...

Answer 47

thyrocervical trunk

Question 48

This muscle **initiates** abduction of the humerus.

Answer 48

Supraspinatus

Question 50

supplies lateral thorax, lateral pec region, lateral breast

Answer 50

lateral thoracic artery

Question 52

Identify the branches.

Answer 52

1. Superior thoracic 2. Thoracoacromial 3. Lateral Thoracic 4. Anterior circumflex humeral 5. Posterior circumflex humeral 6. Subscapular 7. Circumflex scapular 8. Thoracodorsal

Question 53

the upper & lower subscapular nerves & the subscapular artery all supply...

Answer 53

subscapularis muscle

Question 54

Supraspinatus origin insertion action supply

Answer 54

origin = supraspinous fossa insertion = greater tubercle of humerus action = aBduct humerus 1st 15 degrees supply = suprascapular n/a/v, dorsal scapular a/v

Question 56

Deltoid origin insertion action supply

Answer 56

origin = lateral clavicle, acromion, spine of scapula insertion = deltoid tuberosity of humerus action = aBducts humerus, flexes/extends humerus supply = axillary n & posterior circumflex humeral a/v

Question 57

the lateral thoracic nerve travels with this artery

Answer 57

long thoracic

Question 58

Where does the shoulder articulate with the arm?

Answer 58

Glenoid cavity

Question 58

where do the suprascapular nerve & artery pass through?

Answer 58

spinoglenoid notch (to the infraspinatus fossa to supply supraspinatus & infraspinatus)

Question 60

branch of subclavian artery that descends across intercostal spaces lateral to sternum & supplies medial/anterior thorax

Answer 60

internal thoracic artery

Question 61

4 branches of thoracoacromial artery

Answer 61

"Akron City Police Department" acromial clavicular pectoral deltoid

Question 62

This muscle provides outer muscular support of the shoulder.

Answer 62

Deltoid