Week 3 (Shoulder Girdle)

Question 1

Trapezius Origin

Answer 1

External Occipital Protuberance, Medial portion of Superior nuchal line, ligamentum nuchae, spinous process processes of C7 - T12

Question 2

Trapezius Insertion

Answer 2

Lateral 1/3rd of clavicle, acromion, spine of scapula.

Question 3

Trapezius Actions (9)

Answer 3

Bilaterally:
-Extend the head/neck

Unilaterally:
-Laterally flex head/neck to same side
-Rotate head/neck to OPPOSITE side
-Elevate scapulothoracic joint
-Upwardly rotate S/T Joint

Middle Fibers:
-Adduct the scapulothoracic joint
-Stabilize the scapula

Lower Fibers:
-Downwardly rotate scapula
-Depress scapula

Question 4

Rhomboids Origin

Answer 4

Spinous processes of C7-T5

Question 5

Rhomboid Insertion

Answer 5

Medial border of scapula, from across from spine to inferior angle

Question 6

Rhomboid Actions (3)

Answer 6

-Elevate scapula (S/T joint)
-Adduct scapula
-Downwardly rotate scapula

Question 7

Levater Scapula Origin

Answer 7

Transverse processes of C1-C4

Question 8

Levater Scapula Insertion

Answer 8

Medial border of scapula, from just above scapular spine to superior portion.

Question 9

Levater Scapula Actions (5)

Answer 9

-Bilaterally extend head/neck
-Laterally flex head/neck to same side
-Rotate head/neck to SAME side
-Elevate scapula
-Downwardly rotate scapula (S/T joint)

Question 10

Serratus Anterior Origin

Answer 10

External surfaces of first 8 to 9 ribs

Question 11

Serratus Anterior Insertion

Answer 11

Anterior surface of medial border of scapula (under the scapula)

Question 12

Serratus Anterior Actions (5)

Answer 12

-Abduct the scapula (S/T joint)
-Upwardly rotate the scapula
-Depress the scapula
-Hold the medial border of the scapula to the rib cage
-W scapula fixed: elevate the thorax during forced inhalation