Intrinsic(scapulohumoral) & Posterior Arm

Question 1

Deltoid origin

Answer 1

Lateral 1/3 of clavicle
Acromion process
Scapula spine

Question 2

Deltoid insertion

Answer 2

Deltoid tuberosity

Question 3

Deltoid action(each part)

Answer 3

Abduct arm

Anterior: flex, medically rotate, horizontally adduct arm

Question 4

Deltoid nerve

Answer 4

Axillary C5-6

Question 5

Deltoid blood supply

Answer 5

Posterior humoral circumflex A

Deltoid br. Of thoracoacromial trunk

Question 6

Supraspinatus origin

Answer 6

Supraspinous fossa

Question 7

Supraspinatus insertion

Answer 7

Superior facet of greater tubercle

Question 8

Supraspinatus action

Answer 8

Abduct arm
Lateral rotation(weak)
Stabilization

Question 9

Supraspinatus nerve

Answer 9

Suprascapular nerve

Question 10

Supraspinatus blood supply

Answer 10

Suprascapular artery

Question 11

Infraspinatus origin

Answer 11

Infraspinous fossa

Question 12

Infraspinatus insertion

Answer 12

Middle facet of greater tubercle

Question 13

Infraspinatus action

Answer 13

Lateral rotation stabilization

Question 14

Infraspinatus nerve

Answer 14

Suprascapular nerve C5-6

Question 15

Infraspinatus blood supply

Answer 15

Suprascapular A., scapular circumflex A.

Question 16

Teres minor origin

Answer 16

Upper 2/3 axillary border of scapula

Question 17

Teres minor insertion

Answer 17

Inferior facet of greater tuberosity

Question 18

Teres minor action

Answer 18

Laterally rotate arm
Stabilization
Adduct arm (weak)
Horizontally adduct arm (weak)

Question 19

Teres minor nerve

Answer 19

Axillary

Question 20

Teres minor blood supply

Answer 20

Scapular circumflex

Question 21

Teres major origin

Answer 21

Inferior angle of scapula

Question 22

Teres major insertion

Answer 22

Intertubercular sulcus medial lip

Question 23

Teres major action

Answer 23

Medial rotation
Extend arm
Adduct arm

Question 24

Teres major nerve

Answer 24

Lower subscapular

Question 25

Teres major blood supply

Answer 25

Scapular circumflex A.

Question 26

Triceps brachii origins

Answer 26

Long: infraglenoid tubercle Lateral: posterior humerous above radial groove Medial: posterior humerous below radial groove

Question 27

Triceps brachii insertion

Answer 27

Proximal surface of olecranon process

Question 28

Triceps brachii action

Answer 28

Extend forearm | Long: extend arm, horizontal abduction

Question 29

Triceps brachii nerve

Answer 29

Radial N

Question 30

Triceps brachii blood supply

Answer 30

Profunda brachii A

Question 31

Anconeus origin

Answer 31

Lateral epicondyle

Question 32

Anconeus insertion

Answer 32

Lateral side of olecranon

Question 33

Anconeus action

Answer 33

``` Extend forearm Abduct ulna(pronation) Stabilize elbow joint ```

Question 34

Anconeus nerve

Answer 34

Posterior interosseous nerve(C6-8)

Question 35

Anconeus blood supply

Answer 35

Profunda brachii A br.