Shoulder and Arm

Question 1

Anterior Deltoid:
(O, I, A, N)

Answer 1

O: Clavicle - lateral 1/3
I: Deltoid tuberosity
A: Flexion, Medial rotation, and Horizontal adduction of the arm @ the GH jt.
N: Axillary nerve

Question 2

Middle Deltoid
(O, I, A, N)

Answer 2

O: Acromion process of scapula
I: Deltoid tuberosity
A: Abduction of arm @ GH jt
N: Axillary nerve

Question 3

Posterior Deltoid
(O, I, A, N)

Answer 3

O: Spine of Scapula
I: Deltoid tuberosity
A: Extension, Lateral rotation, and Horizontal abduction of arm @ GH jt
N: Axillary Nerve

Question 4

Supraspinatus
(O, I, A)

Answer 4

O: Supraspinatus fossa of scapula
I: Greater tubercle of humerus
A: Abduction of the arm @ GH jt

Question 5

Infraspinatus
(O, I, A, N)

Answer 5

O: Infraspinous fossa of scapula
I: Greater tubercle of humerus
A: Lateral rotation of arm @ GH jt
N: Supra scapular nerve

Question 6

Teres Minor
(O, I, A)

Answer 6

O: Superior lateral border of scapula
I: Greater tubercle of humerus
A: Lateral rotation of arm @ GH jt

Question 7

Subscapularis
(O, I, A, N)

Answer 7

O: Subscapular fossa of the scapula
I: Lesser tubercle of the humerus
A: Medial rotation of the arm @ the GH jt
N: Upper and Lower sub-scapular nerves

Question 8

Teres Major
(O, I, A, N)

Answer 8

O: Inferior angle and inferior lateral border of scapula
I: Medial lip of bicipital groove of humerus
A: Medial rotation, Adduction, and Extension of arm @ GH jt
N: Lower sub-scapular nerve

Question 9

Coracobrachialis
(O, I, A)

Answer 9

O: Coracoid process of scapula
I: Medial shaft of humerus
A: Flexion & Adduction of the arm @ GH jt

Question 10

Biceps Brachii
(O, I, A, N)

Answer 10

O:
Long head: Supraglenoid tubercle of scapula
Short head: Coracoid process of scapula
I: Radial tuberosity of radius and bicipital aponeurosis
A: Flexion of arm @ GH jt, Flexion of forearm @ elbow jt, Supination of the forearm @ radioulnar jt
N: Musculo-cutaneous nerve

Question 11

Brachialis
(O, I, A)

Answer 11

O: Distal 1/2 of anterior shaft of humerus
I: Ulnar tuberosity
A: Flexion of forearm @ elbow jt

Question 12

Triceps Brachii
(O, I, A, N)

Answer 12

O:
Long head: Infraglenoid tubercle of scapula
Lateral head: Humeral shaft - proximal 1/2
Medial head: Posterior humeral shaft - distal 1/2
I: Olecranon process of ulna
A:
Long head: Extension of the arm @ GH jt, Extension of the forearm @ elbow jt
Lateral head: Extension of the forearm @ elbow jt
Medial head: Extension of the forearm @ elbow jt
N: Radial Nerve