Shoulder Muscles

Question 1

Deltoid

Answer 1

Origin:
Lateral third of clavicle, Acromion & Spine of scapula

Insertion:
Deltoid tuberosity of humerus

Function:
Abducts, flexes, and rotates the arm

Question 2

Supraspinatus

Answer 2

Origin:
Supraspinatus fossa of scapula

Insertion:
Greater tubercle of humerus

Function:
Abducts arm

Question 3

Infraspinatus

Answer 3

Origin:
Infraspinous fossa of scapula

Insertion:
Greater tubercle of humerus

Function:
Laterally rotates arm

Question 4

Teres Minor

Answer 4

Orgin:
Lateral border of scapula

Insertion:
Greater tubercle of humerus

Function:
Laterally rotates arm

Question 5

Subscapularis

Answer 5

Origin:
Subscapular fossa of scapula

Insertion:
Lesser tubercle of humerus

Function:
Medially rotates arm

Question 6

Origin:
Lateral third of clavicle, Acromion & Spine of scapula

Insertion:
Deltoid tuberosity of humerus

Function:
Abducts, flexes, and rotates the arm

Answer 6

Deltoid

Question 7

Origin:
Supraspinatus fossa of scapula

Insertion:
Greater tubercle of humerus

Function:
Abducts arm

Answer 7

Supraspinatus

Question 8

Origin:
Infraspinous fossa of scapula

Insertion:
Greater tubercle of humerus

Function:
Laterally rotates arm

Answer 8

Infraspinatus

Question 9

Orgin:
Lateral border of scapula

Insertion:
Greater tubercle of humerus

Function:
Laterally rotates arm

Answer 9

Teres Minor

Question 10

Origin:
Subscapular fossa of scapula

Insertion:
Lesser tubercle of humerus

Function:
Medially rotates arm

Answer 10

Subscapularis