Shoulder Musculature

Question 1

Answer 1

Rhomboid Major

Isolated function: concentrically produces scapular retraction and downward rotation

Question 2

Answer 2

Rhomboid Minor

Isolated function: concentrically produces scapular retraction and downward rotation

Question 3

Answer 3

Lower Trapezius

Isolated function: concentrically accelerates scapular depression

Question 4

Answer 4

Middle Trapezius

Isolated function: concentrically accelerates scapular retraction

Question 5

Answer 5

Upper Trapezius

Isolated function: concentrically accelerates cervical extension, lateral flexion, and rotation

Concentrically accelerates scapular elevation

Question 6

Answer 6

Pectoralis Major

Isolated function: concentrically accelerates shoulder flexion(clavicular fibers), horizontal adduction, and internal rotation

Question 7

Answer 7

Pectoralis Minor

Isolated function: concentrically protracts the scapula

Question 8

Answer 8

Teres Major

Isolated function: concentrically accelerates shoulder internal rotation, adduction, and extension