Scapulohumeral Muscles

Question 1

Deltoid proximal attachment

Answer 1

Lateral third of clavicle, Acromion and spine of scapula

Question 2

Deltoid distal attachment

Answer 2

Deltoid tuberosity of humerus

Question 3

Deltoid innervation

Answer 3

Axillary c5

Question 4

Deltoid heads

Answer 4

CAS
Clavicular
Acromial
Spinal

Question 5

Deltoid Actions

Answer 5

Clavicular; flexes, m rotates shoulder joint
Acromial middle; abducts shoulder joint
Spinal (posteriorly); extends and laterally rotates shoulder

Question 6

Supra spinatus proximal attachment

Answer 6

Supraspinous fossa of scapula

Question 7

Supraspinatus distal attachment

Answer 7

Superior fact ( greater tubercle of humerus)

Question 8

Supraspinatus innervation

Answer 8

Suprascapular nerve c5

Question 9

Supraspinatus actions

Answer 9

Initiate and assists deltoid

Question 10

Infraspinatus proximal attachment

Answer 10

Infraspinois fossa of scapula

Question 11

Infraspinatus distal attachment

Answer 11

Middle factet ; greater tubercle of humerus

Question 12

Infraspinatus nerve

Answer 12

Subscapular nerve c5

Question 13

Infraspinatus action

Answer 13

Laterally rotates shoulder joint;help hold humoral head in glenoid cavity