The Shoulder Girdle Lateral Rotators

Question 1

Name The Shoulder Girdle Lateral Rotators

Answer 1

Trapezius, Serratus Anterior

Question 2

Trapezius origin

Answer 2

Medial third superior nuchal line and external occipital protuberance, ligamentum nuchae, spinous processes and supraspinous ligaments C7-T12.

Question 3

Trapezius insertion

Answer 3

Posterior border lateral 3rd of clavicle, medial border acromion, upper border spine of scapula.

Question 4

Trapezius nerve supply

Answer 4

Spinal accessory nerve (XI)

Question 5

Trapezius actions

Answer 5

Retracts elevates and laterally rotates pectoral girdle
Extend and laterally flex the neck.
Lower fibres can depress scapula.

Question 6

Trapezius functions

Answer 6

Throwing a ball

Question 7

Serratus Anterior origin

Answer 7

Anterior surfaces of the first 8 or 9 ribs

Question 8

Serratus Anterior insertion

Answer 8

Anterior surface of medial border of scapula.

Question 9

Serratus Anterior nerve supply

Answer 9

Long thoracic nerve C5, 6, 7

Question 10

Serratus Anterior action

Answer 10

Protracts & laterally rotates the scapula

Question 11

Serratus Anterior function

Answer 11

Reaching for something