Shoulder Musculature

Question 1

Serratus anterior (shoulder)

Muscle along ribs 4-12 bordering the scapula

Answer 1

Integrated function:
Eccentrically decelerates dynamic scapular retraction
Isometrically stabilizes scapula

Question 2

Rhomboid major (shoulder)

Attaches from the spine out to the shoulder bordering the scapula

Answer 2

Integrated function:
Eccentrically decelerates scapular protraction and upward rotation
Isometrically stabilizes the scapula

Question 3

Rhomboid minor (shoulder)

Bordering scapula superior (above) the spine

Answer 3

Integrated function:
Eccentrically decelerates scapular protraction and upward rotation
Isometrically stabilizes the scapula

Question 4

Lower trapezius (shoulder)

Shoulder to shoulder into the spine of the scapula

Answer 4

Integrated function:
Eccentrically decelerates scapular elevation
Isometrically stabilizes the scapula

Question 5

Middle trapezius (shoulder)

Shoulder to shoulder, superior to spine of scapula

Answer 5

Integrated function:
Eccentrically decelerates scapular elevation
Isometrically stabilizes the scapula

Question 6

Upper trapezius (shoulder)

From the occipital bone down to the shoulders

Answer 6

Integrated function:
Eccentrically decelerates cervical flexion, lateral flexion, and rotation
Eccentrically decelerates scapular depression
Isometrically stabilizes the cervical spine and scapula

Question 7

Pectoralis major (shoulder)

Chest muscles (pecs)

Answer 7

Integrated function:
Eccentrically decelerates shoulder extension, horizontal abduction, and external rotation
Isometrically stabilizes the shoulder girdle

Question 8

Pectoralis minor (shoulder)

Ribs 3-5 (chest)

Answer 8

Integrated function:
Eccentrically decelerates scapular retraction
Isometrically stabilizes the shoulder girdle

Question 9

Anterior deltoid (shoulder)
Front shoulder muscles

Answer 9

Integrated function:
Eccentrically decelerates shoulder extension, and external rotation
Isometrically stabilizes the shoulder girdle

Question 10

Medial deltoid (shoulder)

Mid outside of shoulders

Answer 10

Integrated function:
Eccentrically Decelerate shoulder Adduction
Isometrically stabilizes the shoulder girdle

Question 11

Posterior deltoid (shoulder)

Shoulder muscle on the back of the shoulders

Answer 11

Integrated function:
Eccentrically decelerate shoulder flexion and internal rotation
Isometrically stabilizes the shoulder girdle

Question 12

Teres major (shoulder)

Muscle connect from the top of the rib cage to the humerus

Answer 12

Integrated function:
Eccentrically decelerate shoulder external rotation, abduction, and flexion
Isometrically stabilizes the shoulder girdle