Week 2 (Rotator Cuff)

Question 1

Supraspinatus Origin

Answer 1

Supraspinous fossa of the scapula

Question 2

Supraspinatus Insertion

Answer 2

Greater tubercle of the humerus, superior

Question 3

Supraspinatus Actions (2)

Answer 3

Abduct shoulder
Stabilize head of humerus

Question 4

Infraspinatus Origin

Answer 4

Infraspinous fossa of the humerus

Question 5

Infraspinatus Insertion

Answer 5

Greater tubercle of the humerus (between supraspinatus and teres minor insertions)

Question 6

Infraspinatus Actions (3)

Answer 6

Laterally Rotate
Stabilize head of humerus
Adduct the shoulder

Question 7

Subscapularis Origin

Answer 7

Subscapular fossa of the scapula

Question 8

Subscapularis Insertion

Answer 8

Lesser tubercle of the humerus

Question 9

Subscapularis Action (2)

Answer 9

Stabilize Head of Humerus
Medially rotate

Question 10

Teres minor insertion

Answer 10

Lesser tubercle of the humerus

Question 11

Teres Minor Orgin

Answer 11

Upper 2/3rds of lateral border of scapula

Question 12

Teres Minor Action

Answer 12

Laterally rotate
Stabilize the head of the humerus
Adduct the shoulder

Question 13

Isotonic vs Isometric

Answer 13

Isotonic = Movement
Isometric = No Movement

Question 14

Eccentric vs Concentric Movement (Both are Isotonic)

Answer 14

Eccentric - Muscle lengthens while maintaining tension. I away from O
Concentric - Muscle shortens while exerting a force. I towards O.