Shoulder Joint

Question 0

Middle deltoid

Answer 0

Origin- acromion process
Insertion- deltoid tuberosity
Actions- abduction, horizontal abduction,

Question 1

Anterior deltoid

Answer 1

Origin- anterior distal 1/3 of clavicle
Insertion- deltoid tuberosity
Actions- abduction, flexion, horizontal addiction, internal rotation

Question 2

Posterior deltoid

Answer 2

Origin- spine of scapula
Insertion- deltoid tuberosity
Action-abduction, horizontal abduction, external rotation

Question 3

Coracobrachialis

Answer 3

Origin- coracoid process
Insertion- anterior medial aspect of humerus
Action- adduction, flexion, horizontal adduction of humerus

Question 4

Supraspinatus

Answer 4

Origin- supraspinatus fossa
Insertion- greater tubercle
Action- abduction of humerus

Question 5

Infraspinatus

Answer 5

Origin- infraspinatus fossa
Insertion- dorsal surface of the greater tubercle
Action- external rotation

Question 6

Teres minor

Answer 6

Origin-lower lateral border of scapula
Insertion- posterior surface of greater tubercle
Action- external rotation

Question 7

Subscapularis

Answer 7

Origin- subscapular fossa
Insertion- lesser tubercle
Action- internal rotator of the humerus

Question 8

Teres major

Answer 8

Origin- dorsal surface inferior angle of the scapula
Insertion- medial lip of bicipital groove
Action- adduction, extension, hyperextension, inward rotation of the humerus

Question 9

Latissimus dorsi

Answer 9

Origin- spinous process of t6-l5, dorsal crest of sacrum, iliac crest and lower 3 ribs
Insertion- medial lip of bicipital groove
Action- adduction, extension, internal rotation of humerus

Question 10

Pec major

Answer 10

Origin- proximal anterior 1/2 of clavicle, full length of sternum, and costal cartilage of ribs 1-6
Insertion- lateral lip of bicipital groove
Action- adduction, horizontal adduction, internal rotation

Question 11

Flexors of the humerus

Answer 11

Pec major (clavicular fibers)
Anterior deltoid
Coracobrachialis 
Biceps brachii (short head)

Question 12

Extensors of humerus

Answer 12

Latissimus dorsi
There's major
Posterior delt
Pec major (sternal fibers)
Triceps brachii (long head)

Question 13

Abductors of humerus

Answer 13

Supraspinatus

Lateral deltoid

Question 14

Adductors of humerus

Answer 14

Coracobrachialis 
Latissimus dorsi
Teres major
Pec major 
    - biceps brachii short head
    - triceps brachii long head

Question 15

External rotation of humerus

Answer 15

Posterior deltoid
Infraspinatus
Teres minor

Question 16

Internal rotation of humerus

Answer 16

Pec major
Anterior deltoid
Subscapularis
Latissimus dorsi 
Teres major