L&b - Week 2 (Shoulder + Brachial Plexus)

Front 1

What are the synovial joints in the shoulder?

Back 1

1) Acromioclavicular joint

2) Glenohumeral joint

Front 2

What are the movements of the shoulder?

Back 2

1) Flexion/extension

2) Abduction/adduction

3) Internal/external rotation

4) Combined - circumduction

Front 3

What other movement of the shoulder is needed to complete abduction?

Back 3

External rotation

Front 4

What are the movements of the elbow?

Back 4

1) Flexion/extension

2) Pronation/supination

Front 5

What are the movements of the wrist?

Back 5

1) Flexion/extension

2) Abduction/adduction

3) Pronation/supination

4) Combined - circumduction

Front 6

What are the anterior axio-apendicular muscles?

Back 6

1) Pectoralis major

2) Pectoralis minor

3) Subclavius

4) Serratus anterior

Front 7

What do the anterior axio-apendicular muscles do?

Back 7

They move the pectoral girdle.

Front 8

What is the origin of pectoralis major?

Back 8

1) Clavicular head: anterior surface of the medial 1/2 of clavicle

2) Sternocostal head: anterior surface of sternum, 1- 6 costal cartilages, aponeurosis of external oblique muscle

Front 9

What is the insertion of pectoralis major?

Back 9

Lateral lip of intertubercular sulcus of humerus

Front 10

What is the innervation of pectoralis major?

Back 10

Lateral and medial pectoral nerves

Front 11

What is the blood supply to pectoralis major?

Back 11

Pectoral branch of the thoracoacromial trunk

Front 12

What is the action of pectoralis major?

Back 12

Adduction and medial rotation of humerus

Front 13

What is the origin of pectoralis minor?

Back 13

3rd - 5th ribs near their costal cartilages

Front 14

What is the insertion of pectoralis minor?

Back 14

Medial border and superior surface of coracoid process

Front 15

What is the innervation of pectoralis minor?

Back 15

Medial pectoral nerve

Front 16

What is the blood supply of pectoralis minor?

Back 16

Pectoral branch of the thoracoacromial trunk

Front 17

What is the action of pectoralis minor?

Back 17

Stabilises scapula by drawing it inferiorly and anteriorly against thoracic wall

Front 18

What is the origin of subclavius?

Back 18

Junction of 1st rib and its costal cartilage

Front 19

What is the insertion of subclavius?

Back 19

Inferior surface of middle 1/3 of clavicle

Front 20

What is the innervation of subclavius?

Back 20

Subclavian nerve

Front 21

What is the blood supply to subclavius?

Back 21

Clavicular branch of thoracoacromial trunk

Front 22

What is the fuction of subclavius?

Back 22

Anchors and depresses clavicle

Front 23

What is the origin of serratus anterior?

Back 23

Lateral surface of upper 8 - 9 ribs

Front 24

What is the insertion of serratus anterior?

Back 24

Costal surface of medial border of scapula

Front 25

What is the innervation of serratus anterior?

Back 25

Long thoracic nerve

Front 26

What is the blood supply to serratus anterior?

Back 26

Upper part: lateral thoracic artery

Lower part: thoracodorsal artery

Front 27

What is the function of serratus anterior?

Back 27

Protraction and rotation of scapula

Front 28

What are the scapulohumeral muscles?

Back 28

1) Deltoid

2) Teres major

3) Teres minor

4) Supraspinatous

5) Infraspinatous

6) Subscapularis

Front 29

What is the origin of deltoid?

Back 29

Inferior edge of the crest of scapular spine, lateral margin of the acromion, anterior border of lateral 1/3 of clavicle.

Front 30

What is the insertion of deltoid?

Back 30

Deltoid tuberosity of humerus

Front 31

What is the innervation of deltoid?

Back 31

Axillary nerve

Front 32

What is the blood supply to deltoid?

Back 32

Thoracoacromial artery, anterior and posterior humeral circumflex artery

Front 33

What is the function of deltoid?

Back 33

Major abduction of the arm (after supraspinatous), flexion/extension of the arm.

Front 34

What is the origin of teres major?

Back 34

Posterior surface of the inferior angle of scapula

Front 35

What is the insertion of teres major?

Back 35

Medial lip of the intertubercular sulcus on the anterior surface of humerus

Front 36

What is the innervation of teres major?

Back 36

Inferior subscapular nerve

Front 37

What is the blood supply of teres major?

Back 37

Subscapular and circumflex scapular arteries

Front 38

What is the function of teres major?

Back 38

Medial rotation and extension of humerus

Front 39

What is the origin of teres minor?

Back 39

Upper 2/3 of the posterior surface of scapula immediately adjacent to the lateral border.

Front 40

What is the insertion of teres minor?

Back 40

Inferior facet on the posterior of the greater tubercle of the humerus

Front 41

What is the innervation of teres minor?

Back 41

Axillary nerve

Front 42

What is the blood supply of teres minor?

Back 42

Posterior circumflex humeral artery and the circumflex scapular artery

Front 43

What is the function of teres minor?

Back 43

Lateral rotation of the arm

Front 44

What is the origin of supraspinatus?

Back 44

Medial 2/3 of the suprascapular fossa

Front 45

What is the insertion of supraspinatus?

Back 45

Most superior facet on the greater tubercle of humerus

Front 46

What is the innervation of supraspinatus?

Back 46

Suprascapular nerve

Front 47

What is the blood supply of supraspinatus?

Back 47

Suprascapular artery

Front 48

What is the function of supraspinatus?

Back 48

Initiation of abduction

Front 49

What is the origin of infraspinatus?

Back 49

Medial 2/3 of the infraspinous fossa

Front 50

What is the insertion of infraspinatus?

Back 50

Middle facet on posteior surface of the greater tubercle of humerus

Front 51

What is the innervation of infraspinatus?

Back 51

Suprascapular nerve

Front 52

What is the blood supply to infraspinatus?

Back 52

Suprascapular and circumflex scapular arteries

Front 53

What is the function of infraspinatus?

Back 53

Lateral rotation of humerus

Front 54

What is the origin of subscapularis?

Back 54

Medial 2/3 of subscapular fossa

Front 55

What is the insertion of subscapularis?

Back 55

Lesser tubercle of humerus

Front 56

What is the innervation of subscapularis?

Back 56

Upper and lower subscapular nerves

Front 57

What is the blood supply of subscapularis?

Back 57

Subscapular artery

Front 58

What is the function of subscapularis?

Back 58

Medial rotation of the humerus

Front 59

What are the muscles of the rotator cuff?

Back 59

1) Supraspinatus

2) Infraspinatus

3) Teres minor

4) Subscapularis

Front 60

What are the ligaments of the shoulder?

Back 60

1) Glenohumeral ligaments (GHL) - superior, middle and inferior

2) Coraco-acromial ligament (CAL)

3) Coraco-clavicular ligaments (CCL)

4) Transverse humeral ligament (THL)

Front 61

What do the GHL ligaments do?

Back 61

Create a water-tight seal round the glenohumeral joint and stabilise it

Front 62

What do CCL do?

Back 62

Made from trapezoid and conoid ligaments that are strong ligaments attaching clavicle to the coracoid.

Front 63

What does THL do?

Back 63

Holds the tendon of the long head of biceps within the intertubercular sulcus

Front 64

What are the anterior muscles of the arm?

Back 64

1) Biceps brachii

2) Coracobrachialis

3) Bracialis

Front 65

What is the origin of biceps brachii?

Back 65

Short head: tip of cocacoid process

Long head: supraglenoid tubercle

Front 66

What is the insertion of biceps brachii?

Back 66

Radial tuberosity and fascia of forearm via bicipital aponeurosis

Front 67

What is the innervation of biceps brachii?

Back 67

Musculocutaneous nerve

Front 68

What is the blood supply of biceps brachii?

Back 68

Brachial artery

Front 69

What is the function of biceps brachii?

Back 69

Supinates forearm, flexes forearm when supine.

Front 70

What is the origin of coracobrachialis?

Back 70

Tip of coracoid process of scapula

Front 71

What is the insertion of coracobrachialis?

Back 71

Middle 1/3 of medial surface of humerus

Front 72

What is the innervation of coracobrachialis?

Back 72

Musculocutaneous nerve

Front 73

What is the blood supply to coracobrachialis?

Back 73

Brachial artery

Front 74

What is the function of coracobrachialis?

Back 74

Assists in flextion and adduction of the arm

Front 75

What is the origin of brachialis?

Back 75

Distal 1/2 of anterior surface of humerus

Front 76

What is the insertion of brachialis?

Back 76

Coronoid process and tuberosity of ulna

Front 77

What is the innervation of brachialis?

Back 77

Musculocutaneous and radial nerves

Front 78

What is the blood supply of brachialis?

Back 78

Radial recurrent artery

Front 79

What is the function of brachialis?

Back 79

Forearm flexion in all positions

Front 80

What is the origin of triceps brachii?

Back 80

Long head: infraglenoid tubercle

Lateral head: posterior surface of humerus, superior to radial groove

Medial head: posterior surface of humerus, inferior to radial groove

Front 81

What is the insertion of triceps brachii?

Back 81

Proximal end of olecranon process

Front 82

What is the innervation of triceps brachii?

Back 82

Radial nerve

Front 83

What is the blood supply of triceps brachii?

Back 83

Brachial artery

Front 84

What is the function of triceps brachii?

Back 84

Chief extension of forearm